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[" An alpha-particle is projected toward...

[" An alpha-particle is projected towards "],[" a 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 "],[d_(1),d_(2)" and "d_(3)" respectively.Which of the "],[" following is correct? "],[[" (A) "d_(1)

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