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Question

The most probable velocity of a neutron at 20oC is near by:

A
220 m/s
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B
2200 m/s
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C
22200 m/s
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D
22 m/s
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Solution

The correct option is A 2200 m/s
T=273+20 0C=293 K

Mass of 1-mole proton=1.67×1027×6.023×1023

As we know,

Urms=2RTM

=2×8.314×2931.67×1027×6.023×1023=2200m/sec.

Hence, the correct option is B

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