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With the increase in diameter of the rot...

With the increase in diameter of the rotor, the effective RCF (relative centrifugal force) at a fixed RPM (revolutions per minute ) will

A

Remain unaffected

B

Increase

C

Decrease

D

Be lower at the bottom of the centrifuge tube

Text Solution

Verified by Experts

The correct Answer is:
B
Centrifugal force will be equal and opposite to the centripetal force `F = momega^(2)r` where m = the mass of the rotor `omega` = angular frequency as m and `omega` remains constant `F prop r` Thus with the increase in diameter (2r) the centripetal and centrifugal force will increase.
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