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Physics

Physics
Speed of sound in air is unaffected by change in

Humidity
Temperature
Pressure
Volume

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Physics
Water is used in car radiator because of its

Low density
Easy availability
Low boiling point
High specific heat capacity

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Physics
During hot weather, the fan produces a feeling of comfort. This is because

Conductivity of air increases
Fan cools the air
Our perspiration eva-porates rapidly
Fan supplies cool air

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Physics
A colour-blind person cannot

Have persistence of vision
See distant objects
Distinguish between certain colours
See black colour

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Physics
Which one of the following is responsible for the working of Newton's colour disc experiment ?

Persistence of vision
Formation of impure spectra
Principle of complementary colour
Formation of pure spectra

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Physics
The instrument for measuring intensity of earthquakes is called

Ergograph
Seismograph
Pantagraph
Ediograph

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