Question
Question: A proton and an electron are accelerated by the same potential difference. Let l<sub>e</sub> and l<s...
A proton and an electron are accelerated by the same potential difference. Let le and lp denote the de-Broglie wavelengths of the electron and the proton respectively.
A
le = lp
B
le<lp
C
le>lp
D
The relation between le and lp depends on the accelerating potential difference
Answer
le>lp
Explanation
Solution
le = 2meqVh, lp = 2mpqVh
̃ λpλe= memp > 1 ̃ le > lp