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PHYSICS

Physics
Which one of the following instruments is used to study dispersion of light ?

Spectrometer
Telescope
Microscope
Photometer

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

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

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Physics
An object which absorbs all colours and reflects none appears:

Black
White
Grey
Blue

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Physics
Microphone is a device which transforms the

Sound signal into current signal
Sound signal into light signal
Light signal into sound signal
Current signal into sound signal

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Physics
Conversion of heat into electrical energy is achieved by using :

Thermocouple
Hydrometer
Ammeter
Voltmeter

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