Question # 1

The rate of doing work is called :

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Power

Work

Efficiency

None of above

Plasma exist in _______________

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Earth

Satellite

Moon

Sun

At what angle sin𝜽 and cos𝜽 has same values:

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30^o

45^o

60^o

90^o

Specific heat of water is how many times greater than that of dry soil?

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two times

three time

four times

five times

___________ helps us to pick up objects.

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Force

Weight

Friction

Nil

Ability of body to do work due to its height is called.

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potential energy

kinetic energy

gravitational potential energy

elastic potential energy

Motion of the rocket is the example of which law?

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First law

Second law

Third law

Law of momentum

At night , the air from land to begins towards sea called:

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Land breeze

Sea breaze

Both A and B

Radiation

At sea level, the atmospheric pressure is about.

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101320 Pa

101300 Pa

10110 Pa

10112 Pa

Thermal conductivities of Lead

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23

30

35

85

Einstein's mass-energy equation relation is:

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E =1/2 mc²

E =mc²

E =m²c

E = 2 mc²

Room are heated using gas heaters by:

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Conduction only

Convection and radiation

Radiation only

Convection only

Which of the following is produced in refrigerators by evaporation of a liquefied gas?

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Heating

Cooling

Freezing

Melting

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