Q.

The root mean square velocity of a gas molecule at 100 K and 0.5atm pressure is 106.4 ms1 If the temperature is raised to 400 K and the pressure is raised to 2atm, the root mean square velocity becomes:

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a

106.4 ms1

b

212.8 ms1

c

425.6 ms1

d

851.2 ms1

answer is C.

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Detailed Solution

It is known that;

U=3RTM or U1U2=T1T2106.4U2=100400

(Note that pressure does not come in use)

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