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Calculate the wavelength (in nanometer) ...

Calculate the wavelength (in nanometer) associated with a proton moving at `1.0xx10^(3)ms^(-1)`(Mass proton `=1.67xx10^(-27)kg` and `h=6.63xx10^(-34)Js`):-

A

0.032 mm

B

0.40 mm

C

2.5 mm

D

14.0 mm

Text Solution

Verified by Experts

The correct Answer is:
B
As `lambda=h/"mv" = (6.63xx10^(-34))/(1.67xx10^(-27)xx1xx10^3) =3.97xx10^(-10)m`
`=0.397xx10^(-9) m = ~0.40 `nm
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