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At what temperature will the rms speed of air molecules be double that of NTP?
Options
(a) 519⁰C
(b) 619⁰C
(c) 719⁰C
(d) 819⁰C
Correct Answer:
819⁰C
Explanation:
v(rms) = √(3RT / M)
At T = T₀, v(rms) = √(3RT / M)
But at temperature T, v(rms) = 2 × √(3RT₀ / M)
⇒ √(3RT / M) = 2 √(3RT₀ / M) ⇒ √T = √(4T₀) ⇒ T = 4T₀
T = 4 × 273 K = 1092 K
Therefore, T = 819°C
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Topics: Behavior of Perfect Gas and Kinetic Theory
(34)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In the given figure, a diode D is connected to an external resistance R=100 Ω
- The magnetic field at the centre of a circular coil carrying current I ampere is B.
- If the radius of star is R and it acts as a black body, what would be the temperature
- The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV
- An engine has an efficiency of 1/6. When the temperature of sink is reduced
Topics: Behavior of Perfect Gas and Kinetic Theory (34)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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