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Physics

Physics
Electrostatic precipitator is used to control the pollution of

Thermal
Noise
Water
Air

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Physics
Red light is used for signals because it has

Long wavelength
Low refraction in the medium
High intensity
High frequency

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Physics
A photo-electric cell converts

Light energy to electrical energy
Mechanical energy to electric energy
Heat energy to mechanical energy
Light energy to chemical energy

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Physics
After long periods of use, a grey spot develops on the inside of a bulb. This is because

The tungsten filament evaporates and collects there
Dust inside the bulb condenses on the top
The heat of the bulb scorches the glass at the top
Glass undergoes a change due to the heat

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Physics
The instrument used to measure the speed of the wind is

Chronometer
Altimeter
Anemometer
Dosimeter

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Physics
Speed of light is maximum in ________

Gases
Vacuum
Liquids
Solids

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MORE MCQ ON Physics

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