Question # 1

Which quantity has the same dimension as that of impulse?

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KE

Power

Momentum

Work

If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:

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Power

Work

Pressure

None of these

When force and displacement are perpendicular to each other than work is equal to

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Unity

Infinity

Zero

-Fd

The capacitance of a parallel plate capacitor depends upon

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Area of the plates

Separation between the plates

Medium between the plates

All of the above

The sum of two or more vectors is equal to a single vector which is called:

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Component vector

Resultant vector

Product vector

None of these

If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity

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Fringe width will decrease

Fringe width will increase

Fringe width will remain unchanged

Fringe will become less intense

Electrons of an isolated atom are bound to the nucleus, and

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can only have distinct energy level

can only have same energy level

may or may not have distinct energy levels

none of these

The current is measured in

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volts

watt

ampere

ohm

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

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Time constant

Decay constant

None of these

All of above

In describing functions of digital systems, a closed switch will be shown as

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0

1

low

any one of these

In magnet-coil experiment, emf can be produced by

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Keeping the coil stationary and moving the magnet

Keeping the magnet stationary and moving

Relative motion of the loop and magnet

Any one of above

All above

Time period of simple pendulum is independent of

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length

mass

acceleration due to gravity

none of them

Which are not the elementary particles?

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Photons

Leptons

Hadrons

Quarks

None of these

An inkjet printer uses in its operation:

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Neutrons only

Mesons only

Positrons and photons

An electric charge

None of these

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

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1.25 J

12.5 J

125 J

None of these

When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:

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Along the tangent

Toward the centre

Away from the centre

None 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

The most suitable material for permanent magnet is

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cobalt

iron

steel

alaminium

If both the inputs given to a gate ae 1 such that the output is 0, then it is:

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AND gate

NOR gate

OR gate

NOT gate

Both (A) and (C)

The henry is the unit for

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Resistance

Magnetic flux

Magnetic field

Inductance

The velocity of sound at same temperature is maximum in

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H₂

N₂

O₂

NH₃

The passage of current is accompanied by a magnetic field in the surrounding space:

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Always accompanied

Sometimes accompanied

Never accompanied

Any of above

None of these

The inkjet printer ejects a thin stream of:

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Water

Oil

Ink

Any of above

None of these

The unit of spring constant is

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J-sec

Metre

Nm^-1

None of these

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

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Two

1/2

Zero

3/2

The nature of radiations emitted by a hot body depends upon its:

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Metarial

Temperature

colour

Volume

Length

The gavanometer constant of a moving coil galvanometer is given by

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K=BAN/C

K=BN/CA

K=NAC/B

K=C/BAN

Balmer series was identified in:

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1685

1785

1885

1985

1585

The speed of randomly moving electrons depends upon

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pressure

volume

temperature

mass

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

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a reversible process

an irreversible process

any one of them

both of them

The magnitude of induced emf depends upon the:

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Rate of decrease of magnetic field

Rate of change of magnetic field

Rate of increase of magnetic flux

Constancy of magnetic field

None of these

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