Question

The ratio of the respective de Broglie wavelengths associated with electrons accelerated from rest with the voltages 100 V, 200 V and 300 V is

• A. 0.043090278
• B. 0.044548611
• C. $1 : \frac{1}{\sqrt{2}} : \frac{1}{\sqrt{3}}$
• D. $1 : \frac{1}{2} : \frac{1}{3}$

Answer 1

Answer: (C)

$1 : \frac{1}{\sqrt{2}} : \frac{1}{\sqrt{3}}$

Answer 2

Answer (c) $1 : \frac{1}{\sqrt{2}} : \frac{1}{\sqrt{3}}$