Q.

Gas at a pressure P0 in contained as a vessel. If the masses of all the molecules are halved and their speeds are doubled, the resulting pressure P will be equal to:

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a

2P0

b

4P0

c

P0

d

P0 / 2

answer is B.

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Detailed Solution

P=13mNVvrms2 Pmvrms2 So, P2P1=m2m' ×v2v12=m1/2m12v1v12=2 P2=2P1=2P0

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