Question # 1

Radar system is an application of.

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Chemical effect

Electric effect

Magnetic effect

Doppler's effect

The entropy of the universe with passage of time is.

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Increases

Decreases

Remain constant

Increases and decreases

The difference between tow molar capacities is equal to.

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Plank's constant

General gas equation

Molar gas constant

Boltzmann constant

If velocity 'v' of an object is double, then K.E. because.

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Remain same

Sixteen times

Double

Four times

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

the study of nature is classified into

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Five brancehs

Six Branches

Two Branchs

None of these

For working of heat engine, there must be

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A source

A sink

Ether of these

Both of them

Minimum number of unequal forces whose vector sum can be zero are.

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5

4

3

2

The law of conservation of mass gives us

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Equation of continuity

Stock's law

Bernoulli's equation

Viscosity

Light year is the unit of

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Distance

Time

Light

Velocity

The area between velocity time graph and the time axis is numerically equal to.

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?Speed of object

Distance covered by the object

Average velocity of the object

Acceleration of the object.

The SI units of solid angle is

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Streadian

Radian

Degree

None of these

Newton's rings are formed due to phenomenon of.

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Interference

Dispersion

Diffraction

Polarization

When two identical travelling waves are superimposed, velocity of resultant wave.

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Decreases

Increases

Remain same

Becomes zero

The numer of significant figureswith the increases accracy of the measuring instrument

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Decreases

Remains unchanged

Increasees

None of these

The moment of inertia is analogue to

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Mass

Weight

Torque

Force

Half wavelength corresponds to

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0 ^o

90 ^o

180 ^o

360 ^o

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

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