In Rutherford experiment on $\alpha - $ray scattering the number of particles scattered at ${90^{\rm{o}}}$ be 28 per minute. Then the number of particles scattered per minute by the same foil but are at ${60^{\rm{o}}}$ are.

JEE PHYSICS MCQ: ATOMS

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In Rutherford experiment on

\alpha -

ray scattering the number of particles scattered at

{90^\mathrm{o}}

be 28 per minute. Then the number of particles scattered per minute by the same foil but are at

{60^\mathrm{o}}

are.

View answer and explanation

Correct option: B

112

Option B (112) is correct because the number of scattered particles is inversely proportional to

\sin^4(\theta/2)

, and substituting the given angles allows us to find the new number of particles.