Question # 1

The diver spins faster when moment of inertia becomes.

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smaller

Greater

Constant

Zero

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

A spring has a spring constant k. If it is cut in two equal parts, the spring constant of each part will be

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K

2 K

K/2

4K

Moment of inertia is measure din

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Kg m2

Kg m-2

Rad s-1

Joule second

An elevator is moving up with an acceleration equal to 'g' An apparent weight of the body in an elevator is.

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Zero

Equal to real weight

2 mg

3 mg

SI unit of work

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Newton

Walt

Pascal

Joule

The location of near point changes with

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Age

Size of the eye

Sharpness of the eye

None of these

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

The final image formed by a simple microscope.

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Virtual and inverted

Real and erected

Virtual and erected

Real and inverted

the change in internal energy is defined as

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Q - W

Q-T

Q + P

Q - P

Name the quantity which is a vector.

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Speed

Force

Temperature

Density

The time rate of change of momentum equals

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Weight

Applied force

Impulse

Mass

Increase in speed of sound for 1 ^oC rise in temperature is.

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0.61 ms-1

0.61 cms-1

61 ms-1

6.1 ms-1

The value of solar constant.

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1.4 kW m-2

1.0 kW m-2

1.6 kW m-2

2 kw m-2

A quantity which indicates the state and direction of a vibrating body is known as

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Time period

Amplitude

Phase

Frequency

The product of rotational inertial 'I' and angular velocity ' w' is equal to.

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Torque

Linear momentum

Angular momentum

Force

The ideal gas law is.

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PV =NVk

P = NkT

PV =nRT

P=nRT

In case the work done in zero.

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Constant pressure

Constant volume

Constant temperature

Constant mass

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