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A cylindrical rod is reformed to half of...

A cylindrical rod is reformed to half of its original length keeping volume constant. If its resistance before this change were R, then the resistance after reformation of rod will be

A

R

B

`(R )/(4)`

C

`(3R)/(4)`

D

`(R )/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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