Question # 1

The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to

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Coulomb's law

Gauss's law

Biot-Sarwat law

Ampere's law

Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as

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ON switch

off switch

function switch

none of these

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

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Quadratic equation

Equation of discontinuity

Equation of continuity

None of the above

An emf is set up in a conductor when it:

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Is kept in a magnetic field

Is kept in an electric field

Moves across a magnetic field

Both A and B

None of these

A body is thrown from a height h with speed u, it hits the ground with speed V

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The value of V is maximum if the body is thrown vertically downward

The value of V is maximum if the body is thrown vertically upwards

The value of V is minimum if the body is thrown horizontally

The value of V does not depend on the direction of which it is thrown

Braking radiation causes:

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Continuous spectrum

Line Spectrum

Band spectrum

Discrete specturm

All of these

The nature of thermal radiation is similar to:

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Ultraviolet rays

Light rays

Both of them

None of these

The half life of uranium-238 is

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6.2 x 10⁹years

4.5 x 10⁹days

4.5 x 10⁹years

1.3 x 10⁶years

Which of the following is not a unit of power:

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J-sec

Watt

N m/sec

Horsepower

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

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1/2

More than 1/2

Less than 1/2

Between 1 and 2

In order to have a constant current through wire, the potential difference across its end should:

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Be zero

Be maintained constant

Goes on increasing

Go on decreasing

Both (A) and (B)

One a clear day at noon, the intensity of the solar energy reaching the Earth surface is about

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1 KWm^-1

2 KWm^-2

3 KWm^-2

None of these

The escape velocity of Neptune in Kms^-1

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20.26

24.03

25.4

25.6

The point at which an applied force produces a linear acceleration but not rotation is called

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Center of the body

Center of mass

Center of gravity

Both B and C

The equation W = ________𝜟U represents:

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Thermal process

adiabatic process

Isobaric process

None of these

A circular scale is attached and graduated in

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One degree

2 degrees

Half degree

None of these

According to Einsteins theory, gravity follows the inverse square law expect in

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Weak gravitational field

Strong gravitational field

Very very weak gravitational field

None of these

In place of spark plug, the diesel engine requires also

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High speed air

High temperature air

Low temperature air

None of these

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15 m is

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9 x 10⁵ V

9 V

8 x 10⁶ V

80 V

Polymeric solids have the structure

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One dimensional

Two dimensional

Zero dimension

Three dimensional

The direction of velocity is along the direction of

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Motion

Displacement

Velocity

None of these

If solid sphere and solid cylinder of same mass and density rotate about their own axis,the moment of inertia will be greater for

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Solid sphere

Solid cylinder

Both

Equal both

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