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Four particles have speed 2,3,4 and 5 cm...

Four particles have speed 2,3,4 and 5 cm/s respectively. Their R.M.S speed is

A

`3.5 "cm"//s`

B

`27//2"cm"//s`

C

`sqrt54cm//s`

D

`sqrt(54/4)"cm"//s`

Text Solution

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The correct Answer is:
D
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