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Physics

Physics
The unit of measurement of noise is

Acoustics
Hertz
Amplifier
Decibel

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Physics
Which of the following is the unit of Astronomical Distance ?

Sec
Parsec
Metre/sec
Para/sec

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Physics
What type of heat transfer is boiling water?

Conduction
None of these
Convection
Radiation

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Physics
A nuclear reactor is said to have become 'critical' when

It starts emitting dangerous radioactive radiations
It stops due to malfunctioning
It is shut down to avoid explosion
It is ready to produce controlled energy

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Physics
Sound waves cannot travel in

Vacuum
Glass
Hydrogen gas
Water

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Physics
A sphere rolls down on two inclined planes of different angles but same height, it does so

In the same time with the same kinetic energy
In the same time with the same speed
In the same time
With the same speed

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