Question # 1

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

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Motion emf

Electrostatic emf

Induced emf

Both A and B

Both A and C

The irregular and unsteady flow of the fluid is called

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turbulent flow

steady flow

either of them

both of them

Wave length of that color as compared to that of violet color is:

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Smaller

Longer

Equal

None of these

Choose the set of physical quantities, which have both numerical and directional properties:

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Velocity, mass

Speed, acceleration

acceleration weight

Distance, force

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

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Direction

Force applied

Path followed by the body

Power

Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is:

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20 N

-2 N

18 N

36 N

The projectile attains maximum horizontal range when it is projected at an angle of

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30°

45°

60°

75°

The definite number of significant figures in 5000 is:

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Four

Three

Two

One

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

Which of the following medium/media can transmit both transverse and longitudinal waves:

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Solids

Liquids

Gases

All of them

When the p-n junction is forward biased its resistance is of the order of

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few mega ohms

few kilo ohms

few ohms

few milli ohms

Unit of dielectric constant of medium is

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Coulombs /Newton-meter

Newton-meter²/coulomb²

coulomb²/ (Newton-meter)²

None of the above

In Milikan's experiment, we find the e/m for

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Atom

Electron

Proton

Neutron

An aircraft is moving with a velocity of 300 ms^-1.If all the forces acting on it are balanced then

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It still moves with the same velocity

It will be just floating at the same point in space

It will be fall down instantaneously

It will lose its velocity gradually

The velocity of a body at some particular instant is called

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Initial velocity

Instantaneous velocity

Variable velocity

None of these

In an isothermal process, the change is internal energy is

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Maximum

Zero

Very small

None of these

A snooker ball moving with velocity v collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is

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Zero

Infinity

V

2 V

The path described by a projectile is called its

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orbit

trajectory

range

distance

A wire length L and radius r is fixed at one end and force F applied another end produces an extension x The extension produced in another wire of the same material of length 2L and radius 2r by force 2F is

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1

I

21

41

The digital modulation is expressed in

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Bytes

Codes

Bits

None of these

If the moveable mirror in Michelsion's interferometer moves a distanceλ/2, the path difference changes by

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λ/4

λ/2

λ

3/2λ

One electrostatic unit (esu) of charge is equivalent to

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3.3 x 10 coulomb

3.3 x 10^-9coulomb

3.3 x 10^-10coulomb

3.3 x 10^-11coulomb

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