An alpha-particle is projected towards a stationary Cu nucleus, an Au nucleus and an Ag nucleus with same speed from a large distance. The distances of closest approaches were found to be d1, d2 and d3 respectively. Which of the following is correct?

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answer is C.

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Detailed Solution

for distance of closest approach 12mv2= Ze 2e4πε0d d is proportional to Z Z for Ag 47 for Au 79 for Cu 29

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