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A dry clean needle of diameter 'd' and d...

A dry clean needle of diameter 'd' and density p when carefully placed on the surface of water remains floating. If T is the surface tension of water, then maximum value for the diameter 'd' of the needle for enabling it to float will be

A

`d= sqrt( ( 8rho pi)/( T g))`

B

`d= sqrt((4 rho pi)/(T g ))`

C

`d= sqrt((8T)/(rho pi g))`

D

data incomplete

Text Solution

Verified by Experts

The correct Answer is:
C
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