The temperature of a gas is raised from 27°C to 927°C. The root mean square speed:
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The temperature of a gas is raised from 27°C to 927°C. The root mean square speed:

G1 Physics · Accepted Answer

Step 1: RMS speed ∝ √T for a fixed gas; temperatures must be in kelvin. Step 2: T₁ = 27 + 273 = 300 K; T₂ = 927 + 273 = 1200 K. Step 3: v₂/v₁ = √(1200/300) = √4 = 2. Final answer: (D) gets doubled.