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In a Thomson set-up for the demination o...

In a Thomson set-up for the demination of e/m, electrons accelerated by 2.5 kV enter the region of crossed electric and magnetic fields of strengths `3.6 xx 10^(4) Vm^(-1) and 1.2 xx 10^(-3) T` respectively and through undeflected. The meaured value of `e//m` of the electron is equal to

A

`1.0 xx 10^(11) C-kg^(-1)`

B

`1.76 xx 10^(11) C-kg^(-1)`

C

`1.80 xx 10^(11) C-kg^(-1)`

D

`1.85 xx 10^(11) C-kg^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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