Question # 1

A ball of mass 1 kg moving with velocity 2 ms-1, Its momentum will be

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1 Ns

2 Ns

0.5 Ns

4 Ns

Clockwise torque is taken:

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Positive

Negative

Neutral

Nil

A material of thermometer should has:

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Visible

High freezing point

Low melting point

All of these

In thermo flask radiation is stopped by using :

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Green color

Transparent

Silver color

Nil

In SI units, the value of gravitational constant 'G' is

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6.673 x 10-9 Nm2 kg-2

6.673 x 10-10 Nm2 kg-2

6.673 x 10-11 Nm2 kg-2

6.673 x 10-12 Nm2 kg-2

Clinical thermometer is used by:

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Astronomers

Doctors

Scientist

Chemists

Normal human body temperature is:

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15 ^oC

37^oC

37^oF

98,6 ^oC

Which is not an example of torque?

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Opening a nut

Door opening

Picking up a toy

All of them

If force will be applied on smaller area, pressure will become:

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Much less

Zero

More

Less

The maximum value of friction is:

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Kinetic friction

Static friction

Limiting friction

Dynamic friction

When a body is lifted through a height h, the work donw on it appears in the form of its.

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Kinetic energy

Potential energy

Elastic energy

Geothermal energy

The units of electric current is.

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Candela

Metre

Second

Ampere

The S.I unit of efficiency is :

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J/s

Nm

watt

It has no unit

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