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The speed of four gas molecules are 1 km...

The speed of four gas molecules are `1 km//s`, `3 km//s`, `5km//s` and `7 km//s` respectively. The difference between their r.m.s. speed and average speed is

A

0.683 km/s

B

0.583 km/s

C

0.438 km/s

D

0.358 km/s

Text Solution

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The correct Answer is:
B
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