If the velocity of the electron is `1.6xx10^(6) "ms"^(-1)` , calculate the de-Broglie wavelength associated with this electron .

Options

A. `3.2xx10^(-7)` m
B. `2xx10^(-7)` m
C. `4xx10^(-7) m`
D. `0.5xx10^(-8)` m

Answer

A

Explanation

`lambda_A = (h_A)/(P_A) " "lambda_B = (h_B)/(P_B) " " P_B = 1/4 P_A` ,
`(8 xx 10^(-7))/(lambda_B) = 1/4 implies lambda_B = 32 xx 10^(-7) m `