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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
- If the velocity of an electron increases, then its de Broglie wavelength will
- The fundamental frequency of a closed organ pipe of length 20 cm is equal to the second
- A very small circular loop of radius a is initially (at t=0) coplanar and concentric
- A parallel plate air capacitor of capacitance C is connected to a cell of emf
- According to Hook’s law of elasticity, if stress is increased, the ratio of stress
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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