1.

The electron in a hydrogen atom makes a transition from M shell to L-shell. The ratio of magnitude of initial to final acceleration of the electron isA. `9:4`B. `81:16`C. `4:9`D. `16:81`

Answer» Correct Answer - D
`a=omega^(2)r`
As `" " omegaprop(1)/(n^(3))" " and " : r propn^(2)`
`" "aprop(1)/(n^(4))`
`rArr" " (a_(M))/(a_(L))=((2)/(3))^(4)=(16)/(81)`


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