Question # 1

If the objects of different masses move with the same velocity, then it is more difficult to stop the

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lighter of the two

massive of the two

any one of them

both of them

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

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180 watt

10 watt

20 watt

60 watt

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

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Decreases

Increases

Remains same

Zero

The quantity F x t is called as

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momentum

velocity

acceleration

impulse

Binding energy per nucleus is

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greater for heavy nucleus

least for heavy nucleus

greatest for light nuclei

decreases for medium weight niclei

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

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Two

Three

Five

Seven

Eight

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 coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:

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The coil is distorted

The coil is rotated

The coil is neither distorted nor rotated

Both A and B

None of these

Weber is a unit of

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magnetic flux

magnetic filed intensity

magnetic induction

magnetic flux density

The closed loop gain of the non-inverting amplifier is given by

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G = R₂/R₁

G = -R₂/R₁

G = 1 - R₂/R₁

G = 1 + T₂/R₁

Brownian motion increases due to

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Increase in size of Brownian particle

Increase in temperature of medium

Increase in density of medium

Increase in viscosity of medium

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

In process of annihilation of matter, the two photons produced move in opposite direction to converse

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momentum

charge

energy

mass

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

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n/AL

Al/n

nAL

nA/L

The equation of continuity

A₁V₁= A₂V₂is for the flow of

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an ideal fluid

an incompressible fluid

a non visconcous fluid

all of the above

The concept of field theory was put forward by

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Franklin

Kepler

Oersted

Michael Faraday

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

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+e(v x B)

-C(V x B)

+e²(v x B)

-e(v²x B)

Heat travels through vacuum by

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Conduction

Convection

Radiation

Both A and B

The weight 'mg' of the bob is resolved into

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one component

two components

three components

four components

transverse wave motion is possible in:

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Air

A mixture of NH₃and O₂

Strings

All of these

Marie curie and Pierre curie discovered:

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Uranium

Polonium

Radium

Both (A) and (C)

Plutonium

The unit of resistivity is

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ohm

ohm-m²

ohm-meter

ohm-m^-1

The charge carriers in electrolyte are positive and negative

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protons

electrons

ions

none of these

The charge carriers in gases are

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electrons

ions

protons

ions and electrons

Si units of time period is

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second

hertz

revolution

vibration/sec

The special theory of relativity is based on the

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one postulate

two postulates

three postulates

four postulates

Resistor is a device which convert electric energy to

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Heat energy

Chemical energy

Elastic energy

All of the above

Which one of the following wave motions is transverse:

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Wave motion produced in water when a piece of stone is thrown into it

Pulling of weight hanging vertically with a spiral spring

Both of these

None of these

In a semi-conductor material, current flows due to

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positive charge

negative charge

both of them

none of them

Electric lines of force

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Intersect each other

Are always parallel

Are always anti-parallel

Never intersect

None of these

If a ball comes back to its starting point after bouncing off the wall several times, then its

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total displacement is zero

average velocity is zero

none of them

both of them

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