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Two metallic rings A and B, identical i...

Two metallic rings ` A and B`, identical in shape and size but having different reistivities `rhoA and rhoB`, are kept on top of two identical solenoids as shown in the figure . When current `I` is switched on in both the solenoids in identical manner, the rings ` A and B` jump to heights `h_(A) and h_(B)`, repectively , with ` h_(A) gt h_(B)` . The possible relation(s) between their resistivities and their masses `m_(A) and m_(B)` is(are)

A

`rho_(A) gt rho_(B) and m_(A)=m_(B)`

B

`rho_(A) lt rho_(B) and m_(A)=m_(B)`

C

`rho_(A) gt rho_(B) and m_(A)gtm_(B)`

D

`rho_(A) lt rho_(B) and m_(A)ltm_(B)`

Text Solution

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The correct Answer is:
B, D
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