Question # 1

Fringe spacing is inversely proportional to.

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Wave length

Slit separation

Distance between the slit and screen

Frequency of light

Waves transport energy without transporting

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Matter

Force

Momentum

All of these

In case of planets centripetal force is provided by

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Coulomb's force

Electrostatic force

Gravitational force

Magnetic force

_______ is bio fuel

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Water

Petrol

Ethanol

Oil

All point of the rigid body rotating about a fixed axis do not have same.

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Angular acceleration

Angular speed

speed

Angular displacement

The process followed by Newton for the determination of speed of sound in air is

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Adiabatic

Isothermal

Isobaric

Isochoric

If the are of a circle equals its radius, then the angle subtended at the center will be

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1 degree

One rotation

One radian

Half rotation

Not change in entropy of a system after one complete Carnot cycle is.

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Positive

Negative

Zero

None of these

The terminal velocity can be obtained by using

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Newton's law

Stock's law

Guass's law

None of these

One complete round trip of a body is called

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Displacement

Time period

Vibration

Frequency

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

The diver spins faster when moment of inertia becomes.

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smaller

Greater

Constant

Zero

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 Detector in Photo phone is made up of.

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Cadmium

Germanium

Selenium

Silicon

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

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5

4

3

2

The distance between the consecutive nodes is

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Angular velocity determines, How fast or, How slow a body is

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Accelerating

Vibrating

Rotating

Oscillating

The experimental value for the velocity of sound in air is

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233 m-sec^-1

333 m-sec^-1

433 m-sec^-1

533 m-sec^-1

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