A body takes time to reach the bottom of...

A body takes time to reach the bottom of an inclined plane of angle with the horizontal. If the plane is made rough, time taken now is 2t. The coefficient of friction of the rough surface is

`3/4 tan theta `

`2/3 tan theta`

`1/4 tan theta`

`1/2 tan theta`

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The correct Answer is:

`3/4 tan theta `

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