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Four molecules have speeds 2 km//s, 3 km...

Four molecules have speeds `2 km//s, 3 km//s, 4 km//s` and `5 km//s`. The `rms` speed of these molecules in `km//s` is

A

`(1)/(2)sqrt(27)km//s`

B

`(1)/(2)sqrt(10)km/s`

C

`2.5 km/s`

D

`sqrt((27)/(2))km/s`

Text Solution

Verified by Experts

The correct Answer is:
D
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