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Physics

Physics
Amount of water vapour in the atmosphere is measured in terms of

Humidity
All of these
Smog
Droplets

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Physics
Suitable impurities are added to a semiconductor depending on its use. This is done in order to

increase its life
enable it to withstand higher voltages
increase its electrical resistivity
increase its electrical conductivity

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Physics
Which of the following has the highest frequency?

Radio waves
Cosmic rays
X-rays
Microwaves

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Physics
When a steel ball is placed on the surface of mercury, it does not sink because

Of the high viscosity of mercury
Mercury is a semisolid
Of the surface tension of mercury
The density of mercury is greater than that of steel

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Physics
Quality of a musical note depends on

Fundamental frequency
Amplitude of the wave
Harmonics present
Velocity of sound in the medium

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Physics
Sound cannot pass through

Vacuum
Water
Air
Steel

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MORE MCQ ON Physics

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