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Physics

Physics
Forged documents are detected by

Gamma rays
Ultraviolet rays
Infra-red rays
Beta rays

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Physics
Weight of a body is maximum at the:

Tropics
Pole
Subtropics
Equator

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Physics
A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?

Conduction, convection and radiation
Conduction and convection only
Convection and radiation only
Conduction and radiation only

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Physics
Friction can be reduced by changing from

Sliding to Rolling
Dynamic to Static
Rolling to Sliding
Static to Dynamic

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Physics
Sound waves cannot travel in

Glass
Vacuum
Hydrogen gas
Water

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Physics
A periscope works on the principle of

Reflection
Diffraction
Total internal reflection
Refraction

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MORE MCQ ON Physics

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