Question # 1

In Einstin's mass energy equation, c is the :

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Speed of sound

Speed of light

Speed if volume

None of these

A string is stretched by two equal and opposite force 10 N each. The tension in the string is:

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Zero

5 N

10 N

20 N

Water freezes at

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0oF

32oF

273 K

0 K

The force with which earth attracts a body towards its center is equal to its

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Mass

Weight

Charge

Radius

After tilting if body come back to its original position then the body is in:

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Stable equilibrium

unstable equilibrium

Neutral equilibrium

Equilibrium

In which hot liquid can remains hot:

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Glass

Lead

Thermos

Hot pot

A string is stretched by two equal and opposite forces 10 N each. The tension in the string is

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Zero

5N

10N

20N

Moon is nearly _________ km away from earth.

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6 x 10²⁴

380000

199.62 km

30000

Which of the following do not effect evaporation?

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Temperature

Wind

Volume

Surface area of liquid

Rate of change of momentum equals:

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Displacement

Acceleration

^Force

Velocity

The orbital speed of a low orbit satellite is

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Zero

8 ms-1

800 ms-1

8000 ms-1

Hydro meter is used to measure:

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Pressure

Density

Area

Volume

Degree of hotness or coldness measures the body:

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Heat

Temperature

Energy

Thermal

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