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Physics

Physics
Total number of colours exists in sunlight

7
9
10
5

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Physics
When a number of resistors are connected in series in a circuit, the value of current:

Increases
Becomes half
Decreases
Remains the same

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Physics
Hot springs are heated geothermally by underlying

Water
Magma
Mitula
None of these

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Physics
Ozone layer above the surface of Earth provides a shield against

Ultra-violet rays
Gamma rays
Infra-red rays
X-rays

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Physics
In hydro power station, the motion produced in turbines is due to

Burning of coal
Production of steam
Flow of water
Burning of diesel

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Physics
A copper disc has a hole. If the disc is heated, the size of the hole

Decreases
No change
Increases
First increases and than decreases

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