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The mass of a particle is 1mg and its ve...

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"`.

A

`1.4722xx10^(-24)cm`

B

`1.4722xx10^(-29)cm`

C

`1.4722xx10^(-32)cm`

D

`1.4722xx10^(-34)cm`

Text Solution

Verified by Experts

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`
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