A proton and ana-particle are accelerated through the same p... | PHYSICS - DE BROGLIE'S EXPLANATION OF BOHR'S SECOND POSTULATE OF QUANTISATION | SolveeIt | Solveeit

Today, August 19

Question

A proton and ana-particle are accelerated through the same potential differences. The ratio of their de-Broglie wavelengths l_p/l_a is

A

1

B

2

C

$\sqrt{8}$

D

1/ $\sqrt{8}$

Answer

$\sqrt{8}$

Explanation

Solution

$\frac{\lambda_{P}}{\lambda_{\alpha}}$ = $\frac{\frac{h}{\sqrt{2meV}}}{\frac{h}{\sqrt{2 \times 4m \times 2eV}}}$

= $\frac{\sqrt{8}}{1}$