A proton is accelerated through 225 ,V. Its de Broglie wavelength… - Vidyadip

MCQ

A proton is accelerated through $225 \,V$. Its de Broglie wavelength is ........ $nm$

A
$0.1$
✓
$0.2$
C
$0.3$
D
$0.4$

✓

Answer

Correct option: B.

$0.2$

b
(b)

Energy it gains $=225 \,eV$

$\lambda=\frac{h}{m v}=\frac{\lambda h}{\sqrt{2 m E}}$

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