1. An ideal gas ( γ γ = 1.5) is expanded adiabatically. How many times has the gas to be expanded to reduce the root mean square velocity of molecules 2 times
Text Solution
Verified by ExpertsThe correct answer is:
B
To reduce the rms velocity two times, temperature should be reduced by four times (As 
)
∴ ∴ 
, 
From adiabatic law 
constant we get 
⇒ ⇒ 
[ γ γ = 3/2 given]
⇒ ⇒ 
∴ ∴ 
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