Question # 1

According to Hygen's principle, each point on a wave front acts as a source of.

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Secondary wavelet

New wave front

Sound

Primary wavelet

The temperature of human body on Kelvin scale is

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210K

310K

410K

510K

The maximum range of projectile is 100 km, Take 9=10 ms-2, the initial velocity of the projectile will be.

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1000 kms-1

1 kms-1

10 kms-1

100 kms-1

Pascal is the unit of

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Pressure

Force

Tension

Weight

A communication satellite is used ot reflect the signal of.

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Microwaves

Radio waves

y rays

x -rays

Supplementary units are.

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Three

Two

Five

One

The speed of sound in air does not depend upon

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Temperature

Pressure

Density

Medium

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 is nooptically active

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Sugar

Tartaric acid

Water

Sodium chloride

The units of magnifying power of microscope or telescope are.

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Metre

m^-1

dioptre

No unit

Which one is non renewable source of energy.

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Hydro electric

Bio mass

Tides

Oil

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

Artificial gravity can be created in the space ship by

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Revolving around the earth

Spinning around its own axis

Increasing its velocity

Decreasing it svelocity

The orbital angular momentum is associated with the motion of a body along

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Straight path

Circular path

Curved path

Along any path

Angular acceleration is produced by

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Power

Torque

Pressure

Force

Teh uncertainty may occur due to

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Limitation of an instrument

Natureal variance of the object

Personal negligence

All of the above

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Longitudinal waves do not exhibit

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Reflection

Refraction

Polarization

Diffraction

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