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Calculate the wavelength (in nanometer) ...

Calculate the wavelength (in nanometer) associated with a proton moving at `1.0 xx 10^(3) ms^(-1)` (Mass of proton `= 1.67 xx 10^(-27) kg and h = 6.63 xx 10^(-34) Js`)

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
According to de-Broglie’s equation, `lambda=(h)/(mv)`
Given, `v=1.0xx10^(3)ms^(-1)" "therefore" "lambda=(6.63xx10^(-34))/(1.67xx10^(-27)xx1.0xx10^(3))=3.9xx10^(-10)m" or "lambda~~0.4nm`
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