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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
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When indensity of radiation is increased on a photosensitive plate, then
- Two cells, having the same e.m.f. are connected in series through an external resistance
- An electric dipole of moment ‘p’ is placed in an elecatric field of intensity ‘E’
- In photoelectric emission process from a metal of work function
- Electrons used in an electron microscope are accelerated by a voltage of 25 kV
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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