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Mean Free Path, Collision Frequency

The root mean...

Question

The root mean square speed of the molecules of an enclosed gas is $v$ .What will be the root mean Square speed if the pressure is doubled, the temperature remaining the same?

A

v/2

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B

v

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C

2v

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D

4v

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Solution

The correct option is B
v

The rms speed $= \sqrt{\frac{3 k T}{M}}$ which is independent of pressure. Hence the correct Choice is (b)

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Mean Free Path, Collision Frequency

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