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Physics

Physics
The radiant energy having lowest energy is

Microwave radiation
Gamma rays
Visible light
UV rays

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Physics
Rate of change of momentum is

Area
Velocity
Pressure
Force

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Physics
A device used for converting a.c. into d.c. is called

Induction coil
Rectifier
Dynamo
Transformer

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Physics
Which determines the frequency of a sound wave?

Amplitude
Medium
Source
Speed

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Physics
The unit of measurement of noise is

Decibel
Hertz
Amplifier
Acoustics

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Physics
Echolocation is an adaptation bats use to

Locate flowering plants
All of these
Hunt insects in flight
Find warm places for hibernation

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