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Q.

If Vn and rn denotes the velocity of electron and radius for nth orbit of hydrogen atom respectively, then ratio of the product of Vn and rn for successive orbits is 

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a

1 : 2 : 3 : 4…….

b

1 : 4 : 9 : 16….

c

1 : 8 : 27 : 64….

d

1 : 1 : 1 : ……….

answer is B.

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Detailed Solution

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L=mVr=nh2π

⇒Vnrn∝n

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