Question # 1

the work done in isochoric process is.

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Constant

Variable

Zero

Depend upon condition

An object of mass 1 kg moving with acceleration 0 1 ms-2 will experience a force of.

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10^-2 N

10^-3 N

1 N

1 dyne

For 0.0036 no. of significnat digits

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1

3

2

4

International Telecommunication satellite

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4,6,8 and 10 Hz

4,6,11 and 14 GHz

4,6,8 and 12 Hz

4,8,11 and 16 GHz

The actual efficiency of property turned petrol engine is.

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20% to 30%

30% to 35%

40% to 45%

25% to 30%

The increase in thermal pollution of environment means.

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Increase in the entropy

Decrease in the entropy

Entropy remains constant

Entropy becomes zero

The commercial unit of electric energy is

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Kilo watt hour

watt

Watt hour

Kilo Watt

The internal energy of a piece of lead when beaten by hammer will.

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Increase

Decrease

Remains constant

Increases and then decrease

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If the are of a circle equals its radius, then the angle subtended at the center will be

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1 degree

One rotation

One radian

Half rotation

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

When speed of a body is doubled then its

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K.E. is doubled

P.E. is doubled

Acceleration of doubled

Momentum is doubled

Rate of change of velocity is called

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Speed

Acceleration

Displacement

Torque

The magnifying power of a convex lens of focal lendth 10 cm is

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7

9.6

11

3.5

Close orbiting satellites orbit the earth at a height of about

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400 km

4000 km

400 m

400 cm

The direction of vector in space is specified by

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1- angle

2- angle

3- angle

4 - angle

Pascal is famous for his work

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Hydrodynamics

Hydrostatics

Laws of gases

Behaviour of elastics bodies

The time rate of change of angular displacements called.

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Linear velocity

Linear speed

Angular velocity

Angular speed

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