Question # 1

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

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60 W bulb

100 W bulb

Both equally

None of these

The most suitable material for permanent magnet is

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cobalt

iron

steel

alaminium

In order to get interference using two light rays

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The sources should be monochromatic and coherent

The sources should have the same frequency

Superposition should be linear

All of these

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

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1.46 m sec^-1

2.44 m sec^-1

3.42 m sec^-1

4.43 m sec^-1

Ferromagnetic substances lose their magnetism when heated above a certain temperature, known as

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critical temperature

curie temperature

high temperature

fixed temperature

By placing a dielectric in between the charges, the electrostatic force between them

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Is always reduced

Is always increased

Is not affected

Is increased one million times

None of these

Electrolysis is the study of conduction of electricity through:

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Solids

Liquids

Gases

Plasma

When sound waves travel from air to water which of these remains constant?

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Velocity

Frequency

Wavelength

All the above

The work done moving a body between two points in a conservation field is independent of the:

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Direction

Force applied

Path followed by the body `

Power

The half lie of radium-226 is

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238 years

4.5 x 10⁹days

1620 years

332 years

Real gases strictly obey gas law at:

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High pressure and low temperatures

Low pressures and high temperatures

High pressures and high temperatures

None of these

Equal charges are given to two spheres of different radii. The potential will

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Be more on the smaller sphere

Be more on the bigger sphere

Be equal on both the sphere

Depend on the nature of the material of the sphere

The most abundant isotope of neon is

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neon-20

neon-21

neon-22

neon-23

The induced current is a conductor depends upon:

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Resistance of the loop

Speed with which the conductor moves

Any of these

Both (A) and (B)

None of these

A magnifier gives an image which is:

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Virtual, inverted

Real, erect

Virtual, erect

Real, inverted

Radioactivity

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is exhibited more by semiconductors in general

in exhibited more by the element when they are coupled

with other radioactive elements by a covalent bond

is an atomic property of radioactive elements

The resistance of a conductor does not depend on its

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mass

resistivity

length

cross-sectional area

Work done is maximum when angle between force and displacement is

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0°

90°

180°

None of these

For addition and subtraction purposes, absolute uncertainties are:

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Added

Subtracted

Multipiled

Divided

The concept of field theory was put forward by

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Franklin

Kepler

Oersted

Michael Faraday

According to the special theory of relativity, time is

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absolute quantity

not absolute quantity

constant quantity

none of these

In frequency modulation (FM), the carrier waves amplitude

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Remains constant

Increase

Decreases

None of these

In the phenomenon of hysteresis

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magnetism leads the magnetising current

magnetism lags behind the magnetising current

meganetism goes along the magnetising current

none of them

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

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22 m

6 m

33 m

7.8 m

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

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Has a definite pitch

Has a definite quality

Has a definite capacity

Can penetrate the wall

Static electricity is produced by the transfer of:

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Electrons

Protons

One fluid

Two fluid

None of these

when the deformation produced in the material become permanent, this type of behaviour is called

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proportionality

elasticity

plasticity

none of them

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

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F=eVB

F=e²V/B

F=e/VB

F=B²/ev

When some compass needles are placed on a card board along a circle with the center at the wire, they will

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Point the direction of N-S

Set themselves tangential to the circle

Point in the direction of E-W

None of these

Point in direction of S-E

The idea of quantization of energy was proposed by:

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Einstein

Max.Planck

Maxwell

Bohr

Rutherford

A high concentration of red blood cells increases its viscosity from

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3 - 5 times that of mercury

5 - 8 times that of mercury

3 - 5 times that of water

5 - 8 times that of water

When the emitter-base junction of a transistor is reverse biased, collector current

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Reverses

Increases

Decreases

Stops

The energy acquired by a mass of 1g moving with the speed of light is

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3 x 10⁸J

9 x 10¹³J

3 x 10¹³J

9 x 10¹⁶J

A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is

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24/13

10/3

3

4,8

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

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Both hit the ground at the same veloctiy

Both hit the ground at the same speed

The change of velocity during the path for both balls is the same

The change of speed during the path for both balls is the same

The range of wavelengths of colurs in the visible colours is

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140 nm to 456 nm

10 nm to 56 nm

410 nm to 656 nm

910 nm to 956 nm

None of these

A changing magnetic flux creates around itself

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An electromotive force

An electric field (changing electric flux)

Magnetic field

None of the above

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

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0.52 A

1 mA

0.7 mA

1.4 A

Which of the following options correctly states the equation of continuity for an ideal fluid?

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A₁A₂= V₁V₂

A₁/A₂= V₂/V₁

A₁/A₂= V₁/V₂

none of the above

The transition from solid state to liquid state is:

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Abrupt

Slow

Continous

Discontinous

Both (A) and (D)

Work has the dimension as that of:

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Torque

Angular momentum

Linear momentum

Power

The loudness and pitch of a sound note depends on

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Intensity and velocity

Frequency and velocity

Intensity and frequency

Frequency and number of harmonic

The restoring force is ______ and opposite tot he applied force within ______

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Equal, Elastic limit

Different, The walls of the laboratory

Different, Elastic limit

None of these

The instrument used to gather information form the far side of the universe is

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Compound microscope

Radio telescope

Astronomical Telescope

Simple microscope

When heat is added into the system then change in entropy is

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negative

positive

zero

any one of them

In the resonance condition, the amplitude of the oscillator becomes

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very large

very small

zero

any one of them

The spectrum emitted from hydrogen filled discharge tube is:

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Line spectrum

Discrete spectrum

And spectrum

Absorption spectrum

Both (A) and (B)

The reciprocal of decay constant λ of a radioactive material is:

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Frequency

Half life

Year

Mean life

None of these

A metastable stae:

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Is an excited state

Is that in which excited electron is stable

Is that in which excited electron is usually unstable

Means a time interval of 10^-8second

Both (A) and (C)

There is no way to detect:

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Absolute uniform motion

Accelerated motion

State rest

State of motion

None of these

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

In an adiabatic expansion, the temperature of the gas

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increases

becomes zero

decreases

decreases rapidly

If one newton force acts on a body and displaces the body through 1m work done on body is

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1 dyne

1 joule

1KJ

1 Watt

If a gymnast is sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will:

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Increase

Decrease

Remains constant

None of these

The special theory of relativity is based on the

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one postulate

two postulates

three postulates

four postulates

The amplitude of oscillation of each atom in a metallic crystal rises with the

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rise in temperature

decrease in temperature

even temperature remains constant

all of them

Which one of the least multiple:

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Pico

Femto

Nano

Atto

The electric field lines start from:

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Positive charge

Negative charge

Either A and B

Neutron

An atom

Radian is defined as the angle subtended at the center of a circle by an arc of:

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Length equal to its diameter

Length equal to its radius

Any length

None of these

Which of the following are the units of intensity of light

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Pois

Lux

Siemen

Candela

A person standing near the track of a fast moving train has tendency to fall towards it because of

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Vibration due to motion of train

Gravitation force of attraction between person and trains

The high speed of train

Some other effect

A car is moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed v of the car is:

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38 m/sec

3.8 m/sec

0.6 m/sec

None of these

A P-N juction or semiconductor diode cannot be used as

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A rectifier

Detector

Oscillator

An amplifier

A vector of magnitude 5 N is added to a vector of magnitude 8 N while the orientations are changeable. Range of their possible sum will be very from:

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Zero to 3 N

1 N to 13 N

13 N to 3 N

None of these

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

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The horse on the ground

The horse on the cart

The ground on the horse

The ground on the cart

The direction of induced current is always so as to oppose the cause which produces it. This is

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Lenz's law

Ampere's law

Faraday's law

Coulomb's law

None of these

Coulomb's force between two point charges depends upon

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Magnitude of charges

Distance between them

Medium in which they are located

All of the above

In a transistor, collector current is controlled by

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Collector voltage

Base current

Collector resistance

All of the above

An inertial frame of reference is that frame of reference in which

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a = 0

a > 0

a < 0

all of them

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is

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3.9

4

4.2

6

At high speed, fluid friction _____ and fuel consumption ___,:

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Increases, decreases

Increases, increases

Decreases, increases

None of these

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

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Stationary waves

Transverse waves

Both of these

None of these

Circular motion is an example of motion in:

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One dimension

Two dimensions

Three dimensions

None of these

A particle moving uniformly along circle its projection along diameter performs

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Linear motion

Projectile motion

SHM

Rotatory motion

The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will

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Increase

Decrease

Remain F

Become 10F/9

The information from far side of the universe are gathered by

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Radio telescope

Microscope

Telescope

Spectro scpe

The horizontal component of a projectile moving with initial velocity of 500 ms^-1at an angle 60° to x-axis is

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500 ms^-1

1000 ms^-1

250 ms^-1

Zero

Referring to above figure, current in coil P falls from its maximum value to zero

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At the instant the switch is closed

At the instant the switch is opened

When switch is kept open

When switch is kept closed

None of these

The magnifier forms a virtual image of the object at:

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Least distance of distinct vision

Much farther than the least distance

Both A and B are correct

None of these

Radium was discovered by:

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Becquerel

Marie curie

Pierre curie

Rutherford

Both (B) and (C)

Electromagnetic waves emitted by hot bodies are called:

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Photoelectrons

Alpha rays

Thermal radiation

None of these

A typical rocket consists of fuel

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more than 60% of launch mass

less than 60% of launch mass

less than 80% of launch mass

more than 80% of launch mass

Example of progressive wave is

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transverse waves

longitudinal waves

both of them

none of them

Rutherford performed an experiment on nuclear reactions in:

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1718 A.D

1818 A.D

1918 A.D

2001 A.D.

1701 A.D.

The acceleration of body executing SHM is directly proportional to

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Applied force

Amplitude

Displacement

Frictional force

The obvious effect/s of current is/are:

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Heating effect

Magnetic effect

Chemical effect

Both (C) and (B)

All of these

The vibratory or oscillatory motion of a body is

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translatory motion

back and forth motion about its mean position

free all motion

circular motion

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

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Sensitive

Accurate

Stable

None of these

The basic circuit element in D.C. circuit is:

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A capacitor

A resistor

An inductor

Both (A) and (C)

Both (A) and (B)

Acceleration of the mass at any instant is given by

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a=k/m x

a= - m/k x

a = - k/m x

a=m/k x

Intensity of light determines the:

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Energy of each photon

Number of photons

Speed of photons

Size of photons

None of these

In wilson cloud chamber, the air becomes saturated with:

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Alcohol vapours

Water

Helium gas

Nitrogen gas

None of these

The mass of the object is a quantities measure of its

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speed

velocity

acceleration

inertia

The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:

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Critical temparature

Temperature of vaporization

Melting point

Both (A) and (C)

Both (A) and (B)

The unit of work in CGS system is

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Joule

Erg

Dyne

Watt

The three equation of motions are useful only for

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linear motion with increasing acceleration

line motion with uniform acceleration

linear motion with zero acceleration

linear motion with varying acceleration

In a metal, the valence electrons are:

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Attached to individual atoms

Not attached to individual atoms

Free to move within the metal

Both A and B

Both A and C

The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:

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Ultra red region

Visible region

Ultraviolet region

Any of these

None of these

The phenomenon of generation of induced emf is called

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Electrostatic induction

Magnetic induction

Electromagnetic induction

Electric induction

Both (A) and (D)

A body can have constant velocity when it follows:

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A circular path

A rectilinear path

Trajectory of a projectile

None of these

Electric field strength is defined as

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Work done on unit charge

Force exerted on unit charge

Distance covered by unit charge

Power exerted by unit charge

None of these

Assuage

Choose an answer

shivering

cowardice

brevity

shortness

In the past, energy sources were thought to be boundless.

Choose an answer

without limits

inexpensive

exasperated

organised

Identify Error

Let us disagree agreeably I am sure and I assure you that that would be the best course and that a better solution to the problem is not possible.No error

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A

B

C

D

E

(Complete the sentence with suitable words)

The villagers of Muzaffargarh were told to evacuate their houses ______

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As the water rises

When the water began to rise

When the water begin to rise

As the water begin to rise

(Complete the sentence with suitable words)

When we provided a lot of information regarding the evasion of the enemy they appreciated ______ this information

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To have

Having

Have

Has

I f the focus is F ( 0,-a) and directrix is the line v=a, then equation of the parabola is:

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x² = 4ay

y² = 4ax

y² = -4ax

x² = 4ax

Choose an answer

I3

rI3

r

none

Choose an answer

The sample space for tossing a coin twice is

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{H, T}

{HH, HT, TH, TT}

{H, T, HH}

{HH, HT, TT}

For the parabola the line through focus and perpendicular to the directrix is called

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Tangent

Vertex

Axis

None

If |a x b|2 + (a,b)2 = _____

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|a|2 + |b|2

|a|2- |b|2

|a|2|b|2

None

Choose an answer

If one end of the diameter of the circle 2x²+ 2y²-8x - 4y = 2 = 0 is (2 ,3), the other end is:

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(2,1)

(-2,1)

(2,-1)

(1,-1)

The roots of the equation ax²+ bx + x = 0 are real and distinct if

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b²- 4ac <0

b²- 4ac = 0

b²- 4ac > 0

None of these

Choose an answer

1 radian = ______

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180°

90°

57.296°

60°

The set of integers is a subset of

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The set of natural numbers

The set of whole numbers

The set of prime numbers

The set of rational numbers

Choose an answer

a tan(ax + b) + c

- a tan(ax + b) + c

The area bounded by y = x (x2 - 4) and below x - axis is

Choose an answer

4

0

-4

8

The tangents drawn from the point P to a circle are real and distinct if

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P is on the circle

P is inside the circle

P is outside the circle

none of these

x = r2, y = 1 are the parametric equation of

Choose an answer

Circle

Hyperbola

Ellipse

Parabola

For f(x) = x2, what is the value of f(a) +f (-a) in terms of a?

Choose an answer

3a2

2a2

2a

-7a

A square matrix all of whose elements except the main diagonal are zeros is called a

Choose an answer

Null matrix

Singular matrix

Symmetric matrix

Diagonal matrix

2x + 3y > 4 is a linear inequality in

Choose an answer

one variable

two variables

three variables

none of these

For≥ -2 , 1+3+5+......+(2n+5)

Choose an answer

(n+2)²

(n-2)²

2n+1

(n+3)²

What is the period of cos 6x =?

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π/2

π/3

π/4

π

The matrix A = [aij]mxn with m ≠n is always

Choose an answer

Symmetric

Hermition

Skew-symmetric

None

Choose an answer

A(α) - A(β)

A(α) + A(β)

A(α-β)

A(α+β)

Choose an answer

0

1

-1

undefined

The first three terms in the expansion of (1 - x)^-3are

Choose an answer

1 + 3x + 6x²

1 - 3x + 6x²

-3 - 3x - 6x²

1 - 3x - 6x²

Choose an answer

Three numbers are chosen random without replacement from {1, 2, 3, ...., 10}. the probability that minimum of the chosen numbering is 3 or their maximum is 7

Choose an answer

7 / 40

5 / 40

11 / 40

None of these

A relation in which the equality is true for all values of the unknown is called ______

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An identity

An equation

A polynomial

None of these

Choose an answer

The matrix A = [aij]mxn with m≠n is

Choose an answer

Rectangular

Symmetric

Square

None

Choose an answer

0

-1

1

2

If x - 1 is a factor of x4 - 5x2 + 4 then other factor is

Choose an answer

(x + 2)2(x - 1)

(x + 2)(x - 1)2

(x+2)(x2- x- 2)

(x + 2)2(x - 1)2

Choose an answer

a = 4, b = 1

a = 1, b = -4

a = 0, b = 4

a = 2, b = 4

3x + 4 < 0 is

Choose an answer

inequality

equation

identity

not inequality

Choose an answer

The multiplicative inverse of 0 is

Choose an answer

1

-1

0

Does not exist

Choose an answer

Coordinates of the focus of the parabola x² - 4x -8y-4=0 are:

Choose an answer

(0,2)

(,0,1)

(2,0)

(1,2)

Graph of the question x²+ y²= 4 is

Choose an answer

A circle

An ellipse

A parabola

A square

Which of the following is a factor of x³- 3x²+ 2x - 6

Choose an answer

x + 2

x + 3

x - 3

x - 4

The root of the quadratic equation are

Choose an answer

3

2

1

4

a.a^-1 = a^-1.a = 1 is a

Choose an answer

Commutative law of multiplication

Multiplicative identity

Associative law of multiplication

Multiplicative inverse

Choose an answer

None of these

The solution set of x²- 5x + 6 = 0 is

Choose an answer

{1, 3}

{2, 3}

{1, 2}

None of these

Choose an answer

y : x

x : y

-y : x

-x : y

If x, y, z are the pth, qth, rth terms of an A.P. and also of G.P., then x^y-z. y^z-x. z^x-yeqals

Choose an answer

xyz

0

1

None of these

Let a₁, a₂, a₃, a₄and a₅be such that a₁, a₂, and a₃are in A.P., a₂, a₃and a₄are in G.P and a₃, a₄and a₅are in H.P. Then, a₁, a₃and a₅are in

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G.P.

A.P.

H.P.

None of these

Choose an answer

0

1

8

∞

Choose an answer

If Cosθ=0, thenθ= ______

Choose an answer

nπ/2

(2n + 1)π/2

(2n - 1)π/2

(4n + 1)π/2

The synthetic division method is only used to divide a polynomial by

Choose an answer

quadratic equation

binomial

linear equation

monomial

Given X.Y are any two sets such that number of elements in X = 18, number of elements in set Y = 24,and number of elements in set X∪ Y =40,then number of elements in set x∩ Y =

Choose an answer

3

1

2

4

Choose an answer

1

0

f(x) = x³is:

Choose an answer

an odd function

an even function

an implicit function

a quadratic funtion

The projections of a line segment on x, y, z axes are 12, 4, 3. The length and the direction cosines of the line segment are

Choose an answer

Which of the following is not a solution of system of inequalities 2x- 3y ≤6,2x +y≥ 2,x +2y≤ 8, x≥ 0,y ≥ 0

Choose an answer

(1,0)

(0,4)

(3,0)

(8,0)

The period of|sin⁡2x| is

Choose an answer

π/2

-π/2

π

π/3

Choose an answer

cos 2α=

Choose an answer

sin²α+ cos²α

-cosθ

tanθ

None of these

Choose an answer

(a,b) +(-a,-b) =

Choose an answer

(0,0)

(a,b)

(-a,-b)

(1,1)

G = {e, a, b, c} is an Abelian group with e as identity element The order of the other elements are

Choose an answer

2,2,2

3,3,3

2,2,4

2,3,4

Choose an answer

ⁿC_r

ⁿ⁺¹C_r+1

ⁿC_r+1

None

Roots of the equation x²+ 7x + 12 = 0 are

Choose an answer

{3, -4}

{-3, 4}

{3, 4}

{-3, -4}

If sin x + sin²x = 1, then the value of Cos¹²x + 3cos¹⁰x + 3cos⁸x + cos⁶x + 2 cos⁴x + cos²x-2 is equal to

Choose an answer

0

1

2

sin²x

The statement that a group can have more than one identity elements is

Choose an answer

True

False

Fallacious

Some times true

If the radius of a circle is increased by 1 then area of circle will be

Choose an answer

π r2

π(r+1)2

π r2 +1

2π (r+1)

The different of tan x is

Choose an answer

sec2 x

ln |sec x|

sec2 xdx

-cos ec2 x

1/3 is a decimal

Choose an answer

Recurring

Terminating

Non-terminating

None of the above

In triangle ABC, in which b=95, c=34, a =52^𝜊then the value of a=

Choose an answer

18 cm

18.027 cm

20.7 cm

19 cm

Choose an answer

image

pre-image

constant

none of these

If either A = 0 or B =0,then Ax2 +By2 +2Gx +2Fy +c =0 represents a

Choose an answer

Circle

Hyperbola

Ellipse

Parabola

For all points (x,y) on x-axis

Choose an answer

x is positive

x is negative

y = 0

y is negative

Which is an explicit function

Choose an answer

y = x²+ 2x - 1

x²+ xy + y²= 2

x²+ y²= xy + 2

All are

Choose an answer

X = 100 sinθ

X = 10 sinθ

X = 100 secθ

None of these

Which of the following integrals can be evaluated

Choose an answer

A finite set

An infinite set

An empty set

None of these

Every prime number is also

Choose an answer

Rational number

Even number

Irrational number

Multiple of two numbers

Choose an answer

A^-

A^t

-A

A

Which of the following is factor of x11+a11, where n is an odd integer

Choose an answer

x-a

x+a

2x-a

2x+a

An even function is symmetric about the line

Choose an answer

y = x

x = 0

y = -x

y = 0

Choose an answer

If f(x) = x²then f(0) is

Choose an answer

0

1

2

none of these

A circle passing through the vertices of any triangle is called ______

Choose an answer

In circle

Circum circle

Escribed circle

None of these

x = _________ is in the solution of 2x + 3 < 0

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0

2

-1

-2

How many 6-Digit number can be formed without repairing any digit from the digits 0,1,2,3,4,5

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720

600

120

6-5!

If A is a non-singular matrix then adj A is

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Non-singular

Symmetric

Singular

Non defined

sin(π/2+θ) = _______;

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sinθ

cosθ

-sinθ

-cosθ

If D = {a} , the P(D) =

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{a}

∅

{∅,{a}}

{∅,a}

For which of the following ordered pairs (s, t) is s + t > 2 and s - t < -3?

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(3, 2)

(2, 3)

(1, 8)

(0, 3)

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If 2 and 2 are x and y components of vector then its angle with x-axis is

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30°

45°

60°

90°

The set of all positive even integers is

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Not a group

A group w.r.t. subtraction

A group w.r.t. division

A group w.r.t. multiplication

The set {Z\ {0} } is group w.r.t

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Addition

Multiplication

Division

Subtraction

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(g,f)

(-g,f)

(g,-f)

(-g,-f)

The system of measurement in which the angle is measured in radians is called the

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circular system

CGS system

sexagesimal system

none of these

Every relation, which can be represented by a linear equation in two variables, represents a

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Relation

Cartesian product

Function

Graph