Question # 1

Light entering rom air glass does not change in its.

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Frequency

Wavelength

Velocity

Direction

Which one of the scientist made some contribution to geometrical optics?

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Phythagoras

Archimedes

Euclid

Plato

When the car moves with an increasing acceleration then its velocity time graph is always

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Constant

Variable

A straight line

A curve

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

A constant temperature, if pressure of a given mass of gas is halved, then its volume becomes.

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Halve

Doubled

Four time

Constant

The optical fibre is covered for protection by

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Glass jacket

Plastic jacket

Steel jacket

Diamond jacket

The SI units of flow rate are.

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m2s-1

m3s-2

m3s-1

m2s-2

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

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5

4

3

2

The acceleration of a projectile along x axis is.

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Zero

Increase

Decrease

Equal to 'g'

The speed of sound is greater in solids due to their high.

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Density

Pressure

Temperature

Elasticity

The acceleration produced by elastic restoring force is

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Perpendicular to force

Opposite to force

In same direction as force

Zero

Crests and trough are formed in.

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Longitudinal waves

transverse waves

Stationary waves

Compression waves

The measure of hotness or coldness of a substance is.

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Temperature

Heat

Internal energy

Energy

Maximum number of components of a vector may be

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Infinite

One

two

three

The study of Physics deals with

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Laws of motion

The structure of space and time

Force present in the nature

All of the above

Which material has maximum viscosity

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Glycerin

Plasma

Methanol

Water

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

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Doubled

1/4 original

1/2 of original

Unchanged

A phenomenon by which energy is dissipated from the oscillating system is called.

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Forced oscillation

Free oscillation

Damping

Simple harmonic motion

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