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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
- What is the voltage gain in a common-emiiter amplifier, when input resistance is 4 Ω
- At absolute temperature, the kinetic energy of the molecules
- A small oil drop of mass 10⁻⁶kg is hanging in at rest between two plates seperated
- Four point masses, each of value m, are placed at the corners of a square ABCD
- In Young’s double slit experiment, a third slit is made in between the double slits.
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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