Question # 1

Which one of the followign scientistis made some conributions to geometrical optics

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Plato

Archimedes

Euclid

None of these

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

The produce oscillation, body is pulled away from its

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Mean position

Extreme position

Both a and b

None of these

P.E. of a spring is stored in

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Spring

mass

Both of them

None of these

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

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Adiabatic

Isothermal

Isobaric

Isochoric

Oscillation of shock absorber of a car is practical example of.

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simple harmonic motion

Forced oscillation

Damped oscillation

Undamped oscillation

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

The kilogramis the basic unit of

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Time

Weight

Length

Mass

the louder the sound, the greater will be its.

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Speed

Frequency

Amplitude

Wave length

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

A system does 600 J of work and at the same time has its internal energy increased by 320 J. How much heat has been supplied.

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28o J

920 J

600 J

200 J

The mean kinetic energy of gas is at.

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0 ^oC

-273 ^oC

100 K

100 ^oC

The dimension of pgh has same as that of

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Work

Energy

Pressure

Mass

Identity the non conservative force among the following.

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Frictional force

Electrical force

Gravitational force

Elastic restoring force

Which one is a conservative force

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Elastic spring force

Air resistance

Frictional force

Tension in the spring

When a body is vibrating its displacement from mean position

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Remains constant

Changes with time

Become(-)ve

None of these

If a rocket is accelerating upward with an acceleration of 2 g, an astronaut of weight, mg in the rocket shows apparent weight.

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Zero

Mg

2 mg

3 mg

The branch of physics which deals with the properties of gravitational field, electromagnetic field and nuclear field is called.

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Aerodynamics

Field theory

Acorestics

Hydrodynamics

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