Question # 1

Ammeter is used to measure

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voltage

resistance

voltage and current

current

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

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heat capacity

specific heat capacity

molar specific heat

molar specific heat at constant volume

The value of output resistance of OP-AMOP is of the order of

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few ohms

few hundred ohms

several kilo ohms

several mega ohms

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

One complete round trip of the body about its mean position is called

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displacement

vibration

a complete motion

an acceleration

The force which maintain the strict long-range order between atoms of a crystalline solid is the:

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Nuclear force

Cohesive force

Adhesive force

Coulomb force

None of these

The body oscillates due to ______ accelerates and overshoots the rest position due to _______

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Applied force, Inertia

Restoring force, Friction

Frictional force, Inertia

Restoring force, Inertia

Electron is a particle whose mass is:

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Greater than that of a proton

Smaller than of a proton and greater than mass of neutron

Smaller than that of proton or neutron

Greater than that of an atom

Which instrument is expensive and difficult to use?

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Voltmeter

Potentiometer

CRO

Both A and C

Both A and B

In full wave rectification, simultaneous action is that:

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Two diodes conduct and two do not.

One diode conduct and three do not.

Three diodes conduct and one does not.

All the four diodes conduct

None of these

Which quantity has different dimension?

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Tension

Work

Energy

Torque

How many major components of fibre optic communication system are

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4

5

3

2

An oil film floating on water surface show colours due to

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Interference

Diffraction

Scattering

Reflection

Viscosity of methanol at 30^oC in NSm^-2

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0.341 × 10^-3

0.357 × 10^-3

0.369 × 10^-3

0.510 × 10^-3

The maximum kinetic energy of emitted photoelectrons depends upon:

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The intensity of incident light

Frequency of incident light

Metal surface

Both frequency of incident light and metal surface

To observe diffraction phenomenon the size of a obstacle

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Should be much larger than the wavelength

Should be of the same order as the wavelength

Have no relation of wavelength

Should be exactly λ/2

The path followed by a ballistic missile is called

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parabolic trajectory

ballisitic trajectory

both of them

none of them

A train if 150 m length is going towards north direction at a speed of 10 ms^-1. A parrot flies at a speed of 5 ms^-1 towards south direction parallel to the railway track.The time taken by the parrot to cross the train is equal to

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12 s

8 s

15 s

10 s

The orbital speed for the circular orbit must be equal to the average speed of the satellite for

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one year

one month

one day

one hour

A 1500 kg car has its velocity reduced from 20 ms^-1to 15ms^-1in 3.0 S. How large was the average retarding force

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-4.5 KN

-2.5 KN

-3.7 KN

-4.3 KN

A light and a heavy body have equal momentum which one has greater kinetic energy

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Light body

Both has equal K.E

Heavy body

Cannot predict

A body will be in translational equilibrium, if

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