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Physics

Physics
Decibel is a term connected with :

Sound
Soil
Water
Air

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Physics
Which of the following is the fastest communication channel?

Microwave
Radio wave
Optical fiber
All are operating at nearly the same propagation speed

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Physics
A permanent magnet can affect

None of these
Electromagnets
Magnets
Both A & B

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Physics
Where should a boat compass be mounted?

Near magnet
Near iron
All listed here
Away from electrical wiring

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Physics
Steam at 100°C causes more severe burns than water at 100°C because

Steam has latent heat of vaporisation
Water has no specific heat capacity
Steam has no specific heat capacity
Water has latent heat of fusion

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Physics
Fibre optics work on the principle of

Total internal absorption
Total internal reflection
Scattering of light
Optical rotation

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MORE MCQ ON Physics

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