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Physics

Physics
Electrostatic precipitator is used to control the pollution of

Thermal
Water
Noise
Air

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Physics
Least audible sound for most of the human ear is :

5.0 µ bar
0.005 µ bar
10.0 µ bar
0.0002 µ bar

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Physics
Which of the following is used for regulated electric supply ?

Junction diode
Gun diode
Tunnel diode
Zener diode

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Physics
A liquid disturbed by stirring comes to rest due to

Centripetal force
Density
Viscosity
Surface tension

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Physics
How much calorie of energy is released by a boiled egg ?

50
77
40
60

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Physics
A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

Remains the same
First decrease and then increase
Decrease
Increase

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