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Physics

Physics
The unit of Planck's constant is

J/s
Js2
Js
Js–2

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Physics
A body moving in a circular path with a constant speed has a

Constant displacement
Constant kinetic energy
Constant acceleration
Constant velocity

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Physics
According to the Second Law of Motion, for a given force, acceleration is inversely proportional to the ________ of an object.

Mass
Volume
Force
Density

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Physics
A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

Decrease
Increase
Remains the same
First decrease and then increase

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Physics
Which of the following has the longest wavelength?

X-ray radiation
Visible radiation
Infrared radiation
Ultraviolet radiation

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Physics
Sound waves cannot travel in

Glass
Vacuum
Hydrogen gas
Water

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