Question # 1

Which one is a conservative force

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Elastic spring force

Air resistance

Frictional force

Tension in the spring

The speed of stars and galaxies can be calculated by

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Compton effect

Stefan's law

Doppler's effect

Pascal's law

The angle between x-axis, y-axis and z-axis is

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45°

60°

75°

90°

When newton ring are seen through the transmitted light, then central spot is.

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Dark

Blue

Bright

Red

The resultant of two forces 30 N and 40 N acting parallel to each other is.

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30 N

40 N

70 N

10 N

__ will travel faster than other through an optical fibre.

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Ultraviolet light

Visible light

Infrared light

White light

Distance covered by a freely falling body is 2 seconds will be

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9.8 m

19.6 m

44.4 m

49 m

In stationary waves, the velocity of particle at the node is.

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Maximum

Infinite

Zero

Varible

No of spark plugs needed in the diesel engine are.

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0

1

2

3

Viscosity is represented by Greek letter

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The unit of energy is same as that of

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Power

Work

Torque

Density

The motion of gas molecules is

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In the same direction

Random

Walls of container

Opposite to each other

Sound travel faster in

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CO2

H2

O2

He

If an object is placed with in the focal length of a convex lens, its image is formed.

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Real

Inverted

Virtual

Smaller than object

The SI unit of angular displacement is.

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Degree

Revolution

Radian

Rotation

The SI unit of angular momentum is

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J.S-2

J.S-1

J.S

J.m

Critical angle is that angle of incident ofr which angle of refraction is.

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90 ^o

45 ^o

42 ^o

24 ^o

No body begins to move or comes to rest of itself was given by

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Newton

Pascal

Bernoulli

Bu Ali Sina

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