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MHT CET Physics question

PhysicsAtomsMHT CET

In Rutherford experiment, a 5.3 MeV -particle moves towards the gold nucleus (Z = 79). How close does the -particle get to the centre of the nucleus, before it comes momentarily to rest and reverses its motion? (Take, F/m)

Answer: (C)

Solution

At closest approach , so

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Question ID VK-084820