Question # 1

GPS consists of __________ earth satellites.

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30

2

7

24

Waking on earth is the example of

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1st law of motion

Second law of motion

Third law of motion

Law of Momentum

The unit of weather in map is :

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°C

°F

K

mbar

Decrease in atmospheric pressure predicts:

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Rainy condition

Intense condition

Windy Condition

Pleasant condition

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

Air and water is conductor:

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Poor

Good

Excellent

None of these

S.I unit of gravitational field strength is:

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Nkg

Nkg^-1

Nkg^-2

Nkg^-3

The formula of Density is:

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m/v

v/m

m x v

None of these

The slope of speed time graph is called.

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Distance

Displacement

Acceleration

Velocity

Unit of thermal conductivity is .

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Wmk

W m^-1 K^-1

Wm

None of these

1 Newton =_________

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1 kg ms^-2

1 kg ms

1 kg m^-1s^-2

1 kg^-1m^-1 s^-1

The equivalent resistance in parallel combination is:

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R_c=R₁+R₂+R₃ +.................+R_n

R_c=1/R₁+1/R₂+1/R₃+.................+1/R_n

a and b

None of these

Diffraction of wave can be observed clearly only when the size of slit or obstacle is nearly__________ to the wavelength of the wave:

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Two times

Equal

Four times

None of these

According to Fleming's left hand rule the direction of force on the conductor is given by:

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Thumb

Fore finger

Middle finger

None of these

The distance between principal focus and pole of mirror is called:

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Principal focus

Focal length

Aperture

Image

A thermistor is a dependent resistors:

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Heat

temperature

energy

mass

When a Uranium (92 protons)ejects a beta particle, how many protons are left in the remaining nucleus?

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89 Protons

90 Protons

91 Protons

93 Protons

Radiations present in atmosphere due to the presence of different radioactive elements are:

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Cosmic radiations

Background radiations

secondary radiations

Electromagnetic radiations

The output of an AND gate is only 1, when:

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Both of its inputs are zero

Anyone of the two inputs is zero

Both of its inputs are 1

Anyone of the two inputs is 1

Which of the following devices can be used to produce both a transverse and longitudinal waves:

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A string

A ripple tank

A helical spring (slinky)

A tuning fork

George Boole invented:

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Boolean algebra

Arithmetic algebra

Mean algebra

Geometry

Which component is output device of computer?

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CPU

C.D

Keyboard

Monitor

In order to produce beats, the two sound waves should have.

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The same amplitude

Slightly different amplitude

The same frequency

slightly different frequencies.

The direction of angular acceleration is

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Along the axis of rotation

Perpendicular to the axis of rotation

Opposite to axis of rotation

None of these

A body rotating with angular velocity of 2 radian/s and linear velocity is also 2 ms-1, then radius of circle is.

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1 m

0.5 m

4 m

2 m

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

When the car moves with an increasing acceleration then its velocity time graph is always

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Constant

Variable

A straight line

A curve

The ability of a body to do work is called its

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Force

Power

Capacity

Energy

Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is.

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Zero

2

3

4

Light waves are

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Longtail waves

Transvers waves

Stationary waves

Mechanical wave

The speed of sound in ari at 0 ^oC is 332 ms-1, Then the speed at 40 ^oC will be

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372 ms-1

356 ms-1

346 ms-1

332 ms-1

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

In matter, the Atoms are in a state of never ending

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Motion

Rest

Change

State of decline

Both xenon and caesium each have:

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41 isotopes

36 isotopes

43 isotopes

33 isotopes

Specific resistance of a material depends upon.

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Length

Area

Temperature

Both A and B

Which one has greater cone of impurity among all:

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Emitter

Base

Collector

All are pure

e.m.f is the conversion of --------------- energy into electrical energy

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Chemical

Solar

Light

None of these

One ohm is equal to

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VC-1

CV-1

AC-1

VA^-1

Nuclear fission chain reaction is controlled by using.

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Cadmium rods

Iron rods

Platinum rods

Steel rods

If F1 and F2 are teh magnetic forces acting on a particle and electron respectively when moving perpendicular to the magnetic field then.

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F1=F2

F1>F2

F1<F2

F1 = 4F2

Potentiometer is used to.

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Compare emf of two cells

Detect internal resistance of cell

Measure P.D.

All of these

The magnetic field is uniform and stronger

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Outside the solenoid

Inside the solenoid

At the central part of the solenoid

None of these

Max planck received noble prize in:

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1927

1932

1918

1914

Which of the following basic force is able to provide an attraction between two neutrons:

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Electrostatic and nuclear b

Electrostatic and gravitational

Gravitational and strong nuclear

Only nuclear force