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Questions  

At which of the following temperatures would the molecules of a gas have twice the average kinetic energy they have at 200C?

a
400C
b
800C
c
3130C
d
5860C

detailed solution

Correct option is C

E ∝ T   ∴ E2E1 = T2T1 ⇒ 2E1E1 = T2(20+273)⇒ T2 = 293 ×2 = 586 K = 3130C

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