Question # 1

The Earth is surrounded by a cover of air called

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Atmosphere

Solid

Environment

Surroundings

Rate of change of momentum is equal to:

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Mass

Torque

Weight

Force

The motion of a body is straight line is.

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Random motion

Linear motion

Translatory motion

Circular motion

In screw gauge if zero of circular scale is behind the index line is called error.

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Positive

Zero

Negative

None of these

Cos 0^ois

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0

2

1

0.5

The momentum of two or more than two bodies intersacting remain constant in:

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Law of inertia

Isolated system

System

None

1 nm have meters.

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10^-3 m

10^-6 m

10^-9 m

10^-10m

The orbital speed of a low orbit satellite is:

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Zeri

8 ms^-1

800 ms^-1

8000 ms^-1

To every action there is always an equal but __________ reaction:

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Same

Parallel

Opposite

Equal

If K = 150 N/m and elasticity is 0.20 m than:

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F = 30N

F= =31N

F = 32N

F = 29N

Water starts boiling at:

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80 °C

100 °C

90 °C

101 °C

________ is used to measure the force or weight of a body :

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Physical balance

Spring balance

A and B both

None

According to Archimedes principle the density of a substance is determined by using formula

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D = w1/w2 + w1 x p

D = w1w2/w2- w1 x p

D = w1/w2 - w1 x p

D = w1w2/w2- w1 x p

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