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In Rutherford scattering experiment, the...

In Rutherford scattering experiment, the number of `alpha`-particles scattered at `60^(@)` is `5 xx 10^(6)`. The number of `alpha`-particles scattered at `120^(@)` will be

A

`15 xx 10^(6)`

B

`(3)/(5) xx 10^(6)`

C

`(5)/(9) xx 10^(6)`

D

None of these

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