1.

Calculate the wavelength associated with a proton moving at 1.0xx10^(3)m//s. (Mass of proton =1.67xx10^(-27)kg and h=6.63xx10^(-34) Js)

Answer»

0.032 nm,
0.40 nm
2.5 nm
14.0 nm

Solution :`lamda=h/(mv)=(6.63xx10^(-34))/(1.67xx10^(-27)xx1xx10^(3))`
`=3.9xx10^(-10)m` `=4XX10^(-10)m=0.40nm`


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