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A superconductor has Tc(0)=100K. When a ...

A superconductor has `T_c(0)=100K`. When a magnetic field of `7*5tesla` is applied, its `T_c` decreases to `75K`. For this material, one can definitely say that when

A

`B=5tesla, T_c(B)=80K`

B

`B=5tesla, 75K lt T_c lt 100K`

C

`B=10 tesla, 75Klt T_c(B) lt 100K`

D

`B=10 tesla, T_c(B)=70K`

Text Solution

Verified by Experts

The correct Answer is:
B
Given, for the magnetic field 0 to `7*5 tesla`, the value of critical temperature for given superconductor lies in between `100K` to `75K`. Therefore, for `B=5tesla`, critical temperature of superconductor is more than `75K` but less than `100K`. Hence, option (b) is correct.
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