Question # 1

The path followed by a projectile in known as its

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Range

Trajectory

Cycle

Height

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

The terminal velocity of a droplet falling down under gravity is directly proportional to the square of

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Its density

Its radius

Its viscosity

Its elasticity

The SI unit of angular displacement is.

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Degree

Revolution

Radian

Rotation

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

The product of time period and frequency is.

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Zero

1

2

3

[LT-2] is demensional formula for

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Acceleration

Velocity

Force

Momentum

An ideal heat engine can only be 100% efficient if its cold temperature reservoir is at.

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0 K

0 ^oC

100 K

100 ^oC

Hygen's principle is used for.

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Explain polarization

Locate the wave front

Find the speed of light

Find the index of refraction

Work is a

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Scalar quantity

Vector quantity

Basic quantity

None of these

Soap film is sunlight appears coloured due to.

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Dispersion of light

Diffraction of light

Scattering of light

Interference fo light

In vibrating string, the points where the amplitude is maximum are called.

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Nodes

Antinodes

Troughs

Crests

Opted unit to measure blood pressure is.

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N/m2

Pascal

mm of Hg

N.m2

The units of magnifying power of microscope or telescope are.

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Metre

m^-1

dioptre

No unit

The fringe spacing increases if we use.

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Yellow light

Green lgiht

Blue light

Red light

Stationary waves are generated on a string of high l, if tension is increased , frequency of vibration will

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Decrease

Unchanged

Half

Increases

Which of the following is not directed along the fixed axis of rotation.

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Angular displacement

Angular momentum

Centripetal acceleration

Angular acceleration

The internal energy of system does not depend on

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Temperature

Pressure

Path

Final and initial state

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