The mass of a particle is `1mg` and its velocity is `4.5xx10^(5)cm` per second. What should be the wavelength of this particle if `h=6.652xx10^(-27) "erg second"`.

Options

A. `1.4722xx10^(-24)cm`
B. `1.4722xx10^(-29)cm`
C. `1.4722xx10^(-32)cm`
D. `1.4722xx10^(-34)cm`

Explanation

Given that
`m=1 mg =1 xx 10^(-3)g," " c=4.5xx10^(5)cm//sec., " "h=6.652 xx10^(-27)` erg sec.
`therefore " "lambda=(h)/(mc)=(6.652xx10^(-27))/(1xx10^(-3)xx4.5xx10^(5))=(6.652xx10^(-29))/(4.5)cm=1.4722xx10^(-29)cm`