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A particle of mass 1kg and carrying 0.01...

A particle of mass `1kg` and carrying `0.01C` is at rest on an inclined plane of angle `30^(@)` with horizontal when an electric field of `(490)/(sqrt(3))NC^(-1)` applied parallel to horizontal .The coefficient of friction is

A

0.5

B

`1/(sqrt(3))`

C

`(sqrt(3))/2`

D

`(sqrt(3))/7`

Text Solution

Verified by Experts

The correct Answer is:
D

`N=m g sin theta + q E sin theta`
`mg sin theta =muN+q E cos theta`
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