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In a hydrogen atom, the radius of n^(th)...

In a hydrogen atom, the radius of `n^(th)` bohr orbit is `r_n`. The graph between log `(r_n//r_1)` and logn will be

A

B

C

D

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The correct Answer is:
C
According to Stefan-Boltzmann law, the emissive power is directly proportional to the fourth powerof temperature. So, it will give a straight line.
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