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Physics

Physics
The unit of electrical power is

Bolt
Kilowatt hour
Watt
Ampere

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Physics
The unit of Planck's constant is

Js–2
Js
J/s
Js2

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Physics
If the diameter of a capillary is doubled, then the rise of water in it will be

Two times
No change
Half
Four times

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Physics
Which one of the following physical quantities has the same dimensions as that of Planck's constant?

Angular momentum
Potential energy
Force
Linear momentum

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Physics
A barometer is kept inside a bell jar. Air is slowly pumped out of the jar.

The mercury level starts falling
The mercury level starts rising
The bell jar breaks up
The mercury level does not change

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Physics
Working of safety fuses depends upon1. magnetic effect of the current2. chemical effect of the current3. magnitude of the current4. heating effect of the currentSelect the correct answer using the code given below.

3 and 4 only
1, 2, 3 and 4
4 only
1, 2 and 3 only

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