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The wavelength (in nanometer) associated...

The wavelength (in nanometer) associated with a proton moving at `1.0xx10^(3)` m/s is

A

0.032 nm

B

0.40 nm

C

2.5 nm

D

14.0 nm

Text Solution

Verified by Experts

The correct Answer is:
B
`lamda = (h)/(mv) = (6.62 xx 10^(-34) kg m^(2) s^(-1))/((1.67 xx 10^(-27) kg) (10^(3) ms^(-1)))`
`= 3.96 xx 10^(-10) m = 0.40 nm`
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