Question # 1

The formula of heat capacity is:

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mc

mc𝜟𝜽

mc𝜟Q/𝜟T

None of these

Distance covered by freely falling downward body in first second.

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5 m

29.4 m

10 m

19.6 m

All forces are example of contract forces except:

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Air resistance

Tensional

Push force

Gravitational

If the velocity of the body becomes double then its kinetic energy will:

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Remain the same

Become double

Become four times

Become half

The boiling point of mercury is:

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-10 ^oC

150^oC

375^oC

457^oC

Newton discovered the cause of falling apple in :

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1886

1905

1665

1600

The energy stored in a dam is:

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Electric energy

Potential energy

Kinetic energy

Thermal energy

Anything kept in thermos :

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In temperature remain constant

Its temperature decrease

Its temperature increase

None of these

The value of G is _________ every where:

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Same

Varying

Changing

1.62

The specific heat of water is

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2100 Jkg-1 k-1

4200 Jkg-1 k-1

2500 Jkg-1 k-1

2010 Jkg-1 k-1

Length of a rod is L∘ on temperature T∘. After heating upto temperature T, its length L becomes

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L = L∘ (1 + αΔT)

L = L∘ (1 + ΔT)

L = L∘ (1 - αΔT)

L = L∘ (1 -ΔT)

The value of gravitational constant is SI unit is

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0.673 x 10-10

6.673 x 10-11

4.32 x 10-9

5.32 x 10-11

The turning effect of force is called:

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Torque

Parallel force

Equilibrium

Couple

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