Question # 1

the distance covered during one vibration of an oscillating body in terms of amplitude 'A' is

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A/2

A

2A

4A

An athlete runs with a speed of 12 ms-1. Determine the longest jump he can undertake.

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12 m

14.4 m

24 m

16.2 m

Efficiency of a heat engine working between 27 ^oC and 32 ^oC will be.

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50%

90%

40%

62%

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

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Doubled

1/4 original

1/2 of original

Unchanged

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

The product of time period and frequency is.

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Zero

1

2

3

1 KWh =

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3.6 x 10³K

3.6 x 10⁶K

3.6 x 10⁹J

3.6 x 10¹²J

The unit o pressure of gas is

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Nm^-2

Pascal

Atmosphere

All of these

In red light is used as compare to blue light then fringe spacing.

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Decreases

Remain same

Increases

Becomes zero

No of spark plugs needed in the diesel engine are.

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0

1

2

3

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 dimensions of angular velocity are

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[LT-1]

[LT-2]

[T-1]

[L-1T-1]

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

The number of significant figures with the increases degree of approximation

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Decreases

Increases

Remains unchanged

None of these

Significant figures in 0.000546

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1

4

3

5

The motion of gas molecules is

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In the same direction

Random

Walls of container

Opposite to each other

When sound waves enter in different medium, the quantity that remains unchanged is.

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Intensity

Speed

Frequency

Wave length

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

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