Question # 1

Centre of gravity of uniform square is:

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Intersection of diagonals

Point of intersection of medians

At centre

None of these

Tan 90°=

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Infinity

1

0

0.866

Cos 0^ois

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0

2

1

0.5

The height of geostationary satellites with respect to Earth is

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36,300 km

40,300 km

30,300 km

42,300 km

Heat capacity of 5 kg water is.

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2000 JK^-1

2100 JK^-1

21000 JK^-1

210000 JK^-1

Water freezes at .

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0^o F

32 ^oF

-273 K

0 K

When the cyclist stop pedalling, bicycle stops due to :

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Friction

Momentum

Weight

Mass

Which of the substance is the lightest one?

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Copper

Mercury

Aluminim

Lead

A straight line parallel to time-axis ona distance -time graph tells that the object is.

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Moving with constant speed

In motion

At rest

Moving with variable speed

Outer edge of the curved road is elevated to prevent

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Circular motion

Centripetal force

Skidding

Protection

Brownian motion is an example of.

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Linear motion

Random motion

Circular motion

Vibratory motion

Shining silvered surface is a best:

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Emitter

Absorber

Reflector

None of these

A car starts from rest. It acquires a speed of 25 ms^-1after 20 s. The distance moved by the car during this time is

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31.25 m

250 m

5000 m

500 m

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