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Q.

When the temperature of a gas is raised from 270C to 900C, the percentage increase in the rms velocity of the molecules will be

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a

10 %

b

15 %

c

20 %

d

17.5 %

answer is A.

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Detailed Solution

C'C = 273+90273+27 = 363300or C'C = 1.21 = 1.1or C'C -1 = 0.1or C'-CC×100 = 0.1 × 100 = 10%
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