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The temperature of a given mass is increased from 27°C to 327°C. The rms velocity of the molecules increases ___________

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The temperature of a given mass is increased from 27°C to 327°C. The rms velocity of the molecules increases ___________

(a) √2 times

(b) 2 times

(c) 2√2 times

(d) 4 times
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Right answer is (a) √2 times

The best I can explain: vrms  is proportional √T

v2/v1 =√(T2/T1)=√((273+327)/(273+27))=√(600/300)=√2

v2=√2 v1.
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