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Physics

Physics
For a freely falling body, the sum of kinetic energy and potential energy is always

Same
Variable
Zero
Unity

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Physics
The splitting of white light into its components is due to:

Transmission
Reflection
Dispersion
Refraction

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Physics
Bolometer is used to measure

Velocity
Frequency
Temperature
Wavelength

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Physics
Which sources produce alternating current (AC)?

Batteries
Hydro-electric generators
All of these
Solar power plants

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Physics
The rice is cooked more quickly in a pressure cooker because

Water boils at a higher temperature under pressure.
Less quantity of water is used.
None of these
It is covered.

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Physics
The colour of sky appears blue due to

Reflection
Refraction
Scattering of shorter wave lengths
Dispersion

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