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Q.

For a gas, the rms speed at 800 K is

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a

twice the value at 200 K

b

same as that at 200 K.

c

four times the value at 200 K

d

half the value at 200 K

answer is C.

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Detailed Solution

Vms∝T
∴v1v2=T1T2=800200⇒v1=2v2

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