In Thomson experiment of finding `e//m` for electrons, been of electron is replaced by that of muons (particle with same charges as of electrons but mass `208` times that of electrons). No deflection condition in this case satisfied if

Options

A. `B` is increased `208` times
B. `E` is increased `208` times
C. `B` is increased `14.4` times
D. None of these

Answer

C

Explanation

In the condition of no deflection `(e)/(m) = (E^(2))/(2VB^(2)) rArr` If `m` is increased by `208` times then `B` should be increased `sqrt(208) = 14.4` times.