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Solution


Q.

The temperature of a gas is -50°C. To what temperature the gas should be heated so that the rms speed is increased by 3 times           [2023]
1 3097 K  
2 223 K  
3 669°C  
4 3295°C  

Ans.

(4)

As we know that vrms∝T

⇒(vrms)2(vrms)1=T2T1⇒4=T273-50

⇒16=T223⇒T=3568 K=3568-273=3295°C

∴    ΔT=3295°C