Question # 1

Change of momentum is equal to

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Force

Tension

Impulse

Pressure

The time rate of change of momentum equals

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Weight

Applied force

Impulse

Mass

Weight of a 60 kg man in moving elevator with constant acceleration of 1/2 f

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Zero

300 N

600 N

200 N

According to Huygen's principle the points on primary wave front can be considered as

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Secondary wavelets

Ray of light

Source of light

None of these

SI unit of work

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Newton

Walt

Pascal

Joule

Pi radian is equal to.

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0^o

90^o

180^o

57.3^o

The frictional force is

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Conservative force

Non conservative force

Electric force

Magnetic force

Rate of change of velocity is called

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Speed

Acceleration

Displacement

Torque

A spring has a spring constant k. If it is cut in two equal parts, the spring constant of each part will be

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K

2 K

K/2

4K

The product of rotational inertial 'I' and angular velocity ' w' is equal to.

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Torque

Linear momentum

Angular momentum

Force

Star moving towards the earth show

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Red shift

Blue shift

Green shift

Yellow shift

The minimum distance from eye at which an object appears to be distinct is

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Near point

Focal length

Image distance from lens

Object distance from lens

Reapters are placed in new system at distance of.

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30 km

50 km

80 km

100 km

Hygen's principle is used for.

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Explain polarization

Locate the wave front

Find the speed of light

Find the index of refraction

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

The device used for measurement of liquid flow is.

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Manometer

Barometer

Hydrometer

Venturimeter

Two quantities involved in work are

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Force and speed

Force and velocity

Force and displacement

Force and acceleration

A₁b₁= A₂b₂represents

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Stock's law

Newton's law

Equation of continuity

Brenoulli's equation

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