Question
Question: An electron has velocity x ms<sup>–1</sup>. For a proton to have the same de-Broglie wavelength, the...
An electron has velocity x ms–1. For a proton to have the same de-Broglie wavelength, the velocity will be approximately –
A
x1840
B
1840x
C
1840x
D
x
Answer
1840x
Explanation
Solution
le = mvh= me×xh. . . (1)
lp = mvh= mp×vh
= 1840me×vh . . . (2)
le = lp (given)
Ž me×xh= 1840me×vh
Ž v = 1840x