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Indicate the conditions under which the ...

Indicate the conditions under which the ratio of de Broglie wavelengths of an `alpha`-particle and a proton will be-

A

when the ratio of their velocities is 4:1

B

when the ratio of their velocities is 1:8

C

when the ratio of their energies is 128:1

D

when the ratio of their velocities is 1:16

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The correct Answer is:
B, C
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