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Q.

The de-Broglie wavelength associated with a hydrogen molecule moving with a thermal velocity of 3 km/s will be

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a

1 Ao

b

0.66 Ao

c

6.6 Ao

d

66 Ao

answer is B.

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Detailed Solution

λ=hmvrms⇒λ=6.6×10-342×1.67×10-27×3×103=0.66 Ao
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