46. The r.m.s. speed of the molecules of a gas in a vessel is 400 m/s . If half of the gas leaks out, at constant temperature, the r.m.s. speed of the remaining molecules will be
(a) 800 m/s (b) 400√2 m/s
(c) 400 m/s (d) 200 m/s
Answer-c
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a