MCQ
In the following diagram, which particle has highest $e/m$ value?
- A$A$
- B$B$
- C$C$
- ✓$D$
✓
Answer
Correct option: D.
$D$
d
The deflection of a particle along $y-$axis is electricfield is given by $y=\frac{E e x^{2}}{2 m v^{2}}$
The deflection of a particle along $y-$axis is electricfield is given by $y=\frac{E e x^{2}}{2 m v^{2}}$
$\Rightarrow \mathrm{y} \propto \frac{\mathrm{e}}{\mathrm{m}}$ for all other values to be constant. since $y$ is maximum for $D$, hence it has highest $e/m $ ratio.
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