Question # 1

Which is the example of vector quantity

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Torque

Speed

Density

Work

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

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

A communication satellite is used ot reflect the signal of.

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Microwaves

Radio waves

y rays

x -rays

Energy dissipated usually appears as

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P.E.

Heat Energy

Chemical energy

Nuclear Energy

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

Maximum number of components of a vector may be

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Infinite

One

two

three

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

Metre is the basics unit of

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Mass

Force

Velocity

Length

The process of confining the beam of light to vibrate in one plane is called.

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Interference

Diffraction

Polarization

Total internal refraction

In case of planets centripetal force is provided by

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Coulomb's force

Electrostatic force

Gravitational force

Magnetic force

The SI units of flow rate are.

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m2s-1

m3s-2

m3s-1

m2s-2

The state of human blood flow can be found by using.

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Newton's formula of speed of sound

Interference of sound

Phenomena of beats

Doppler's effect of sound

The frequency of 2nd pendulum is

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0.5 Hz

1 Hz

1.5 Hz

2 Hz

Longitudinal waves do not exhibit

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Reflection

Refraction

Polarization

Diffraction

Original source of energy for biomass is

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Earth

Star

Moon

Sun

In Michelson's experiment the relation used to find the speed of light is

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16 fc

1/16 fd

16 fd

16/fd

The shortest distance between two points is called

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Distance

Amplitude

Displacement

Is a number

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