1.

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 xx 10^(3) ms^(-1)

Answer»

0.032 nm
0.40 nm
2.5 nm
14.0 nm

Solution :`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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