Question # 1

Slope of velocity time graph represents:

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Acceleration

Speed

Torque

Work

The first shell near the neucles is

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L-shell

X-shell

N-shell

M-shell

In gases, the charge carries are:

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Electrons

Positive ions

Negative ions

Both (A) and (C)

Both (A) and (B)

A body moving along the circumference of a circle of radius R completes one revolution. The radius of a covered path to the angle subtended at the centre is:

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Radius of the circle

Twice the radius

Thrice the radius

None of these

The special theory of relativity treats problems invoving

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inertial frame of references

accelerating frame of references

both of these

none of these

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

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20 ms^-2

10 ms^-2

2 ms^-2

1 ms^-2

With increase of temperature, the viscosity of liquid and gases

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Increases for both

Decreases for both

Increases for liquids and decreases for gases

Decreases for liquids and increases for gases

The current sensitivity of the galvanometer is

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C/BAN

BAN/C

CAN/B

CBN/A

The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its

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I_cwill decrease

V_CEwill increase

I_Cwill increase

V_CCwill increase

The SI unit of permitivity is

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Nm²C²

N^-1m^-2C²

NmC²

Nm²C^-1

The unit of thermodynamical scale is

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centigrade

fahrenheit

kelvin

none of them

The reactance of a coil when used in the domestic A.C. power supply (220 volts, 50 cycles per second) is 50 ohms. The inductance of the coil is nearly

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2.2 henry

1.6 henry

0.22 henry

0.16 henry

The electric field will be uniform

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Near a positive point charge

Near a negative point charge

Between two oppositely charged parallel metal plates

None of above

A typical rocket ejects the burnt gases at speeds over

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400 ms^-1

40000m s^-1

40000 ms^-1

60000 ms^-1

The charge carriers in an electrolyte are

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Positive ions

Negative ions

Either A or B

Both A and B

Neither A nor B

The machines which deals with the objects moving with velocities approaching that of light is called:

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Relativistic mechanics

Wave mechanics

Quantum

Statics mechanics

When quarter of a circle is completed, the phase of vibration is:

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90°

180°

45°

360°

The locus of all points in a medium having same phase of vibration is called

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Crest

Trough

Wavelength

Wave-front

Electric flux is defined by the relation

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E.A.

E x A

E/A

none of these

The size of the domain is such that they can contain

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10²to 10⁴atoms

10⁴ to 10⁸atoms

10⁸to 10¹²atoms

10¹²to 10¹⁶atoms

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

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one ohm

one joule

one volt

one ampere

In which of the following components, pn-junction is used

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light emitting diode

photo diode

photo voltaic cell

all of these

The L-C parallel circuit the capacitor draws a

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leading current

lagging current

main current

none of these

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

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Charge Q

Potential V

Capacity

Energy U

A rheostat can e used:

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As variable resistor

As potential divider

For varying the current

All of these

None of these

magnetic field is a:

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Vector quantity

Scalar quantity

Scalar as well as scalar quantity

Any of (A) or (B)

Neither (A) nor (B)

If two forces of magnitudes 3.5 and 2.5 N act on a body such that the angle between the forces is zero, then magnitude of the resultant will be:

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1.0 N

6 N

3.5 N

12 N

The work performed on an object does not depend on:

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Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

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

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

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3

24

126

200

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

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Increases

Decreases

Remains the constant

Either of these

None of these

The number of countries who manage the largest satellite system is:

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3

24

126

200

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

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81 K

355 K

627 K

627°C

In the expression of force experienced by electron, the direction of both v and B are

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parallel

zero

perpendicular

none of them

The pressure will change in the pipe, as the fluid moves through that pipe of varying

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cross-section

height

none of them

both of them

Synthetic materials fall into the category of

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crystalline solids

amorphous

polymeric solids

all of them

Neutrons are

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positive charge

negatively charged

massless

neutral

The emission of radiations take place in elements, having charge number greater than

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109

82

69

52

According to the de-Brogile relation, an object of large mass and ordinary speed has

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very small wavelength

very large wavelength

very small frequency

all of these

Above a certain velocity of a fluid is called

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turbulent flow

steady flow

either of them

both of them

The greatest stress that a material can endure without losing the proportionality between stress and strain is called

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plastic line

breaking point

proportional limit

none of them

The time interval during which the Voltage source changes its polarity once is known as:

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Time period T

Half the time period

Quarter the time period

Two third of the time period

None of these

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

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equal to the resonant frequency

slight different from the resonant frequency

greatly different from the resonant frequency

any one of them

The general theory of relativity treats problems involving

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inertial frame of references

accelerating frame of references

both of these

none of these

Viscosity is defined as

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the friction between fluid and its container's walls

the internal friction between two layers of fluid

the resistance to flow a fluid experiences

the extent to which outside factors effect the fluid's flow

Referring to above figure, due to change in current in the coil P, the change in magnetic flux:

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Is associated with coil P

Is associated with coil S

Causes an induced current is coil S

All of these

None of these

Amplitude is the displacement of the vibrating body from:

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One extreme position to the other extreme position

Mean position any one extreme position

Both A and B are correct

None of these

Total number of base units are

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Three

Five

Seven

Nine

The relation V = IR represents

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Ampere law

Faraday's law

Ohm's law

Len's law

The fractional change in resistance per kelvin is known as

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temperature coefficient

resistance coefficient

super temperature

critical temperature

The waves which propagate by the collision of material particles are known as

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e.m. waves

mechanical waves

light waves

microwaves

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

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Increases, decreases

Increases, increases

Decreases, increases

None of these

A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is

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17 m/s

33 m/s

17.5 m/s

none

The number of translation degress of freedom for a diatomic gas is

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2

3

5

6

The body will move with terminal velocity when it acquires

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minimum speed

zero speed

maximum speed

none of them

For production of beats the two sources must have

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Different frequencies and same amplitude

Different frequencies

Different frequencies, same amplitude and same phase

Different frequencies and same phase

In rotational motion, analogue of force F us called:

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Couple

Torque

Mass

Moment of intertia

The power factor of resonant series circuit is

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1

0

-1

0.5

In the same medium, velocity of the wave:

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Goes on increasing

Remains constant

Goes on decreasing

None of these

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

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Becomes half

Becomes zero

Ramains same

Becomes double

The value of current at resonance in series LCR circuit is affected by the value

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R only

C only

L only

R, C and L

The percentage of available heat energy converted into work by a diesel engine is roughly

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35 %`

40 %

35 - 40 %

25 %

Physics deals with the study of

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Matter

Energy

Both of them

Human Body

A field in which the work done in moving a body along closed path is zero is called

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Nuclear Field

Conservative field

Gravitational field

Non-conservative field

Density of fluid is defined as:

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Its volume to mass ratio

Product of volume and mass

Its mass of volume ratio

None of these

Surface tension of water is due to

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Inter molecular attractions

Inter molecular spaces

Inter molecular repulsion

None of above

Change in momentum is one second called.

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Impulse

Force

Energy

Work

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

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dead beat galvanometer

stable galvanometer

shunt galvanometer

sensitive galvanomter

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

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Decreases

Increases

No change

May increase or decresase

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

At O° K which of the following properties of a gas will be zero?

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Kinetic energy

Potential energy

Vibrational energy

Density

Capacitance of two or more capacitors

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Increases in series combination

Increases in parallel combination

Remains unchanged

None of the above

The SI unit of spring constant is identical with that of:

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Force

Surface tension

Pressure

Loudness

The example of mechanical wave is

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waves in ropes

waves on water surface

waves in air

all of them

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

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waves

beat

interference

resonance

Proton was discovered by Rutherford in

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1915

1906

1910

1920

Light year is a unit of:

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Time

Distance

Velocity

Intensity of light

Work done is maximum when angle between force and displacement is:

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0°

90°

180°

None of these

The impedance of RLC series resonance circuit at resonant frequency is

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Greater than R

Equal to R

Less than R

None of these

The emission of electrons from a metal surface when exposed to light of suitable frequency is called the

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pair production

Compton effect

photoelectric effect

relativity

Circular motion is an example of motion in:

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One dimension

Two dimensions

Three dimensions

None of these

Absolute motion cannot be detected

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in its own frame of references

in a different frame of references

both in its frame and different frame of references

none of these

Strength of magnetic field is measured in SI units, in:

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N

N/Am

Am/N

Nm/A

None of these

The arrangement or molecules or atoms in a crystalline solid can be studied by using:

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Chemical methods

Neutrons

X-ray techniques

Copper atoms

Both (A) and (B)

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

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A - Z

A + Z

Z

A

Davision and Germer performed experiment to verify

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de-Brogile hypothesis

theory of relativity

Newton's law of gravitation

Mass-energy relation

Diameter of the atom is of the order of

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10^-10m

10^-12m

10^-15m

10^-9m

Alternating current can be transmitted:

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To long distance

At very high cost

At very low cost

Both (A) and (C)

Both (A) and (B)

Glass and high carbon steel are the examples of

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brittle substances

ductile substances

plastic substances

elastic substances

To display a digit of EIGHT, the number of ON LED'S are:

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Two

Three

Five

Seven

Eight

The special theory of relatively treats the problems involving:

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Inertial frames of reference

Non-inertial frames

Non-accelerated frame

Botha (A) and (C)

Both (B) and (C)

The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:

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one

two

three

four

five

(CRO) Cathode ray oscilloscope is a device used for high speed

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velocity

graph plotting

time-velocity

none of these

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

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First

Second

Third

None of these

The second law gives the relationship between

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mass and velocity

force and acceleration

velocity and acceleration

mass and weight

The field in which work done is moving body between two points depends upon the path followed is called:

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Conservative filed

Non-conservative field

Electric field

None of these

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

Unit of impulse in

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Newton

Kg m

Kg m/s

Joule

The SI unit of stress is

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N/m²

Nmc

dynes/m

N

If A represents linear momentum and c, the velocity of light, then unit of pc in international system of units is:

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Newton

Joule

Joule-Sec

Joule-s^-1

Watt

Conventionally the angular velocity is directed to an angle of:

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

If f (x)=a0 +a1x+a2x2+a3x3-----+0n-1xn-1+anxn then f(n) (x) is equal to

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n!

ann!

0

an

Range of 3 cot x is ______

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[-1, 1]

[-3, 3]

R

None of these

What is the period of tan 4/3 x =?

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π/4

4π/3

7π/4

3π/4

the latus rectum of the parabola x³= -4ay is:

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x = a

y = -a

x = -a

y = 0

A and B be two square matrices and if their inverse exist the (AB)-1 =

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A-1 B-1

AB-1

A-1B

B-1A-1

Z is a

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Infinite set

Finite set

Singleton set

Set of all integers

I f a =5i + 2j, then|a| =

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√13

√7

1/√13

√29

If k2x2 +2hxy- 4y2 =0 represents two perpendicular lines then

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k = 2

k = ±2

k = -2

k ≠0

The distance of the point (-2 , -3) from y-axis is

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2

-2

3

-3

If a, b, c, d, e, f are in A.P.,then e-c is equal to

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2(c - a)

2(f - d)

2(d - c)

d - c

The period of|sin⁡2x| is

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π/2

-π/2

π

π/3

If for two events A and B , P(A∪B)=1,then events A and B are

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Certain events

Mutually exclusive

Complementary events

Independent

Choose an answer

0

1

8

∞

The three consecutive numbers a,√ab,b are in

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G.P

H.P

G.M

None of these

If the angle between two vectors with magnitude 6 and 2 is 60° when their scalar product is

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12

6

3

0

Ifᵨ> 1 , then the conic, is:

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Ellipse

Parabola

Hyperbola

None of these

If the angle of a triangle are in the ratio 2 : 3 : 7, the triangle is

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Obtuse

Acute

Right angle

Isosceles

The centre fo the circle x²+ y²+ 12x -10 = 0 is

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(12, -10)

(6, -5)

(-12, 10)

(-6, 5)

Choose an answer

Commutative property of addition

Closure property of addition

Additive inverse

Associative property w.r.t. to addition

If Z₁= 1 + i, Z₂= 2+3i, then |Z₂- Z₁| = ?

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The constant distance of all points of the circle from its centre is called the

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Radius of the circle

Secant of the circle

Chord of the circle

Diameter of the circle

The points (5, 2, 4)(6, -1, 2) and (8, -7, k) are collinear if k is equal to

Choose an answer

-2

2

3

-1

In R, the additive inverse of a is

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0

1

-a

1/a

If x⁴- 10x²- 2x + 4 is divided by x + 3, then the reminder is

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1

0

4

None of these

Let A and B be two sets. If every element of A is also an element of B then

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A fraction in which the degree of the numerator is greater than or equal to the degree of the denominator is called

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A proper fraction

An improper fraction

An equation

An identity

Choose an answer

An integer is chosen at random from the number ranging from 1 to 50. the probability that the integer chosen is a multiple of 2 or 3 or 10 is

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3 / 10

5 / 10

7 / 10

9 / 10

The number of permutations of n objects of which there are n₁like of one kind, n₂like of the second kind and n₃like objects of third kind are

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The positive value of k for which the equation x2 + kx + 64 = 0 has one of the roots 0

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4

64

8

All values of k

Period of 3 sin x is ______

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0

1

-1

2

Choose an answer

1

0

Two positive integers whose sum is 30 and their product will be maximum are

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12,18

10,20

15,15

14,16

Name the property used in a (b-c) = ab - ac

Choose an answer

commutative property of multiplication

distributive property of multiplication

associative property of multiplication

multiplicative inverse

Choose an answer

none of these

Choose an answer

n(n - 1) (n - 2) in factorial form is

Choose an answer

Co-ordinate of a point on the parabola y² = 8x whose focal distance is 4 are:

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(2 , 4)

(-2 ,-4)

(-2, 4)

(2,-4)

If B-A≠φ , then n(B-A) is equal to

Choose an answer

n(a)+n(c)

n(c)-n(a)

n(a)-n(c)

None of these

Choose an answer

30°

60°

45°

None of these

y=-a is the equation of the directrix of

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y2 =4ax

x2=-4ay

x2=4ay

y2=-4ax

f(x) = x is

Choose an answer

trigonometric function

exponential function

quadratic function

identify function

Choose an answer

An open sentence formed by using the sign of equality "=" is called

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Equation

In equation

True sentence

False sentence

Choose an answer

An observer on the top of a cliff 200 m above the sea level, observes the angles of depression of two ships on opposite sides of the cliff to be 45° and 30°, respectively. The distance between the ships if the line joining them points to the base of cliff is

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The key for opening a door is in a bunch of 10 keys. A man attempts to open the door by trying the keys at random discarding the wrong key. The probability that the door is opened in the 5th trial is

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1 / 10

2 / 10

3 / 10

4 / 10

Choose an answer

Such fraction which can not be written in the form ofp⁄q where p,q and q≠ 0,such fractions are called.

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Fractinal numbers

Rational Numbers

Even Numbers

Whole Numbers

The mid point of the line segment joining the points A(3,1) and B(-2,-4) is

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(1, -3)

If A and B are two sets then any subset R of B x A is called

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relation on A

relation on B

relation from A to B

relation from B to A

Choose an answer

If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =

Choose an answer

-i -15j

i-15j

i-3j

None of these

Choose an answer

x = ________ is in the solution of 2x + 3 > 0

Choose an answer

1

-2

-3

-4

If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:

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Orthogonal

Collinear

Perpendicular

None of these

If -1 < x < 0, which of the following statements must be true?

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x < x²< x³

x < x³< x²

x²< x³< x

x²< x < x³

The physical quantity which can be specified by a number alongwith unit is called a

Choose an answer

scalar

vector

constant

none of these

Choose an answer

none of these

Choose an answer

p < r

p > rr

p + r < 0

p - r < 0

For trival solution |A| is

Choose an answer

A

|A| is non zero

A = 0

None of these

The sum of an indicated number of terms in a sequence is called

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sequence

progression

Series

Mean

Which of the following is a vector

Choose an answer

length

momentum

volume

speed

The point of contact of the circles x²+ y² - 6x -6y+10 = 0 and x² + y² =2 is

Choose an answer

(-3 ,2)

(1 , 3)

( -2 , -1)

None of these

Through how many radians does the hour hand of a clock turn in one hour

Choose an answer

It is not possible to find the exact value of

Choose an answer

π

√9

∛27

√1

A non-terminating non_recurring decimal represents an

Choose an answer

Irrational no

Both a & c

Rational no

None of these

Choose an answer

The solution set of trigonometric equation contains

Choose an answer

one element

two elements

three elements

Infinite elements

The middle term in the expansion of (a +x)¹²is

Choose an answer

7th

8th

9th

6th

We solve the system of non-homogeneous linear equations by

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a and b

b and c

c and a

a,b and c

The sum of all even numbers less than 100 is

Choose an answer

2450

2352

2272

2468

A conjunction of two statement p and q is true only if

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p is true

q is true

Both p and q are true

both p and q are false

Choose an answer

f(x) = x³is:

Choose an answer

an odd function

an even function

an implicit function

a quadratic funtion

If distance of (a,b) from origin is 5 then

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a²+ b²=5

a = 5

b = 5

The number of proper subset of A ={a.b.c.d} is

Choose an answer

3

6

8

15

Choose an answer

none of these

Choose an answer

(a - c)²= b²- c²

(a - c)²= b²+ c²

(a + c)²= b²- c²

(a + c)²= b²+ c²

Choose an answer

If a set S contains n elements then P (S) has ........ number of elements

Choose an answer

2ⁿ

2ⁿ²

2.n

n²

The line y = 2 x + c is a tangent to the parabola y²= 16 x if c equals

Choose an answer

-2

-1

0

2

If the lower limit of an integral is a constant and the upper limit is a variable, then the integral is a

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Constant function

Variable value

Function of upper limit

All

Choose an answer

Biconditional

Implication

Antecedent

Hypothesis

Choose an answer

A²- 5A + 7I = 1

2A²- 3A + 7I = 0

A²- 5A + I = 0

A²- 5A + 7I = 0

Power set of difference set N-W is

Choose an answer

Empty set

Infinite set

Singleton set

{0,∅}

The parabola y2 + 2y + x = 0 lie in _____ quadrant.

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First

Second

Third

Fourth

In polar form of complex number r =

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The solution of the equation 3 tan²x = 1 is ____________

Choose an answer

none of these