Question # 1

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

Cloud formation in atmosphere is an example of.

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Isothermal process

Isochoric process

Adiabatic process

Isobaric process

A force of 100 N makes an angle of 60o with Y- Axis, its horizontal component is.

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50 N

60 N

70.7 N

86.6 N

If focal length of objective and eye piece is 0.5 m and 10 cm respectively then magnifying power of telescope will be.

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0.5

5

10

20

the velocity of sound is maximum at 20 ^oC in

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Lead

Copper

Glass

Iron

The speed of sound in air would become double than ots speed at 10^oC at a temperature of.

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313 ^oC

586 ^oC

859^oC

899 ^oC

Two quantities involved in work are

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Force and speed

Force and velocity

Force and displacement

Force and acceleration

Unit of acceleration is

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ms-1

ms

ms-2

m2s

A paratooper moves downward with

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Zero acceleration

Constant acceleration

Positive acceleration

Negative acceleration

What would encourage trade between two countries

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Different tax system

Frontier checks

National currencies

reduced tariffs

Which one of the following force cannot do any work on the particle on which it acts.

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Fractional force

Gravitational force

Electrostatic force

Centripetal force

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

The moment of inertia is analogue to

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Mass

Weight

Torque

Force

Carnot cycle consists of.

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Two steps

Three steps

Four steps

Five steps

A Carnot engine has an efficiency of 50% when its sink temperature is at 27 ^oC. The temperature of source.

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273^oC

300 ^oC

327 ^oC

373 ^oC

The resultant of two vectors having magnitude 10 N and 8 N Can not be

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2 N

9 N

18 N

20 N

The motion of a body moving along a circular path is called.

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Translational motion

Angular motion

Vibratory motion

Linear motion

A frame of reference stationed at the earth is an

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Inertial frame

None internal frame

Accelerated frame

Laboratory frame

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