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Physics

Physics
The ''four stroke petrol engine' is based on

Boyle's-cycle
Carnot-cycle
Diesel-cycle
Otto-cycle

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Physics
Let a thin capillary tube be replaced with another tube of insufficient length then, we find water

change its meniscus
will overflow
will not rise
depressed

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

Angular momentum
Force
Linear momentum
Potential energy

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Physics
At the center of the sun, fusion converts hydrogen into

Water
Plutonium
Helium
Carbon

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Physics
Matter waves are

De Broglie waves
Longitudinal waves
Electromagnetic waves
Transverse waves

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Physics
It is easy to burst a gas-filled balloon with a needle than with a nail. It is because

Needle exerts more pressure than nail on the balloon.
Gas is reactive with the needle.
Nail exerts more pressure than needle on the balloon.
Nail is more longer than needle.

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