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Physics

Physics
Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?

Rainbow
Earthshine
Halo
Mirage

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Physics
When light passes from one medium to another, this phenomenon of change in its direction is called ________

Diffraction
Propagation
No option is correct
Refraction

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Physics
Magnetic keepers are used to protect magnets from :

Effect of other magnets
Demagnetization due to heating
Self-demagnetization
Earth's magnetic field

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Physics
A photo-electric cell converts

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

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Physics
The energy stored in a watch spring is

Kinetic energy
Potential energy
Heat energy
Chemical energy

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Physics
An object with a mass of 22 kg moving with a velocity of 5 m/s possesses a kinetic energy of :

2750 J
110 J
110 J
275 J

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