2. When a silver foil (Z=47) was used in an o-ray scattering experiment, the number of a -particles scattered at 30° was found to be 200 per minute. If the silver foil is replaced by aluminium (z=13) foil of same thickness, the number of a -particles scattered per minute at 30° is nearly equal to
1) 15
2) 30
3) 10
4) 20
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Answer:
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Explanation:
Therefore, the number of alpha particles scattered per min for aluminium foil is 15 and the correct option is A.