Question # 1

The magnitude of A will be

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Zero

A²

1

A

The molecules of an ideal gas exert

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Force on each other

No force on each other

Large force on each other

Pressure on each other

An oil film on water surface shows colour due to.

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Diffraction

Interference

Polarization

Dispersion

10 waves pass through a point in 2 seconds with speed 10 ms-1 the frequency of wave will be

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1 Hz

2 Hz

5 Hz

10 Hz

Entropy remains constant.

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Isothermal process

Adiabatic process

Isochoric process

Isobaric process

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

The path followed by a projectile in known as its

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Range

Trajectory

Cycle

Height

Total change in momentum of an isolated system is

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Always (+) ve

Always (-) ve

Has maximum value

Zero

Satellites are the objects that orbit around the

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Moon

Sun

Earth

Star

A force of 10N makes an angle 30o with y axis. Then magnitude of x -component is.

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5 N

8.66 N

10 N

Zero

According to Newton's formula, the speed of sound in air at STP is

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332 ,ms-1

340 ms-1

350 ms-1

280 ms-1

Who did give the correct formula for the speed of sound in air?

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Boyle

Laplace

Newton

Einstein

The first person who attempted to measure the speed of light was.

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Michelson

Hygen's

Galileo

Ability

When distance is plotted against the force, it is taken along

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x-axis

y-axis

z-axis

None of these

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

Velocity of sound is independent of

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Temperature

Density

Pressure

Medium

Kilo watt hour is the unit of

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Power

Energy

Force

Torque

Reapters are placed in new system at distance of.

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30 km

50 km

80 km

100 km

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