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Physics

Physics
In a nuclear reactor, one of the following is used as a fuel.

Radium
Uranium
Diesel
Coal

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Physics
The velocity of the sound is highest in

Water
Air
Metal
Vacuum

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Physics
One light year is equal to

2 trillion miles
8 trillion miles
9 trillion miles
6 trillion miles

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Physics
If a copper wire is increased to double its length, its resistance will become

Four times
Double
Half
One–fourth

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Physics
The dimensional formula for universal gravitational constant is

M 1L3T2
M–1L3T–2
M–2
ML2T–2

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Physics
Ventilators are provided near the ceiling of the room because

These provide some sunlight in the room
The exhaled warmer air rises up and goes out
These do not look nice in the lower part
These provide cross ventilation in the room

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