Question # 1

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

In S.H.M, the acceleration of the body is directly proportional to

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Weight of body

Applied force

Amplitude

Displacement

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

The minimum distance from eye at which an object appears to be distinct is

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Near point

Focal length

Image distance from lens

Object distance from lens

The time rate of change of momentum equals

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Weight

Applied force

Impulse

Mass

The entropy of the universe with passage of time is.

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Increases

Decreases

Remain constant

Increases and decreases

Efficiency of steam locomotive is.

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8%

10%

9%

7%

The power needed to lift a mass of 5000 g to height of 1 m in 2 secnd is

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2.45 watt

24.5 watt

245 watt

2.45 watt

Sound travel faster in

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CO2

H2

O2

He

If the wave motion is 0.01 sec and wave speed is 100 ms-1 then frequency of wave is.

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0.5 Hz

1 Hz

10 Hz

100 Hz

Direction of a vector in space requires

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Two axis

Three axis

Four axis

Both a and b

During adiabatic process, which factor remains constant.

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Entropy

Pressure

Momentum

Power

Entropy remains constant.

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Isothermal process

Adiabatic process

Isochoric process

Isobaric process

When velocity time graph is a straight line parallel to time axis then

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Velocity is zero

Acceleration is constant

Acceleration is zero

Velocity is variable

Longitudinal waves do not exhibit

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Reflection

Refraction

Polarization

Diffraction

Centripetal force perform

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Maximum work

Minimum work

Negative work

No work

Head to tail rule is used for

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Addition of vectors

Subtraction of vectors

Multiplication of vectors

Division of vectors

The fringe spacing increases if we use.

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Yellow light

Green lgiht

Blue light

Red light

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