| ⇦ | 
| ⇨ |
When temperature of an ideal gas is increased from 27⁰C to 227⁰C, its r.m.s. speed changes from 400 m/s to Vs. The Vs is
Options
(a) 516 m/s
(b) 450 m/s
(c) 310 m/s
(d) 746 m/s
Correct Answer:
516 m/s
Explanation:
[ʋ(rms)]² ∝ absolute temperature
[ʋ₂ / ʋ₁]² = T₂ / T₁ ⇒ (ʋ₂ / 400) = √[(273+227) / (273+27)] = √(500 / 300) = √(5 / 3)
.·. ʋ₂ = 400 × √(5 / 3) = 400 × √1.67 = 516 m/s
Related Questions: - Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.
- If vₑ is escape velocity and vₙ is orbital velocity of a satellite
- A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 secs
- A rod lies along the X-axis with one end at the origin and the other at x→∞. It carries
- The kinetic energy of α-particle emitted in the α-dacay of ₈₈Ra²²⁶ is
Topics: Behavior of Perfect Gas and Kinetic Theory
(34)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.
- If vₑ is escape velocity and vₙ is orbital velocity of a satellite
- A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 secs
- A rod lies along the X-axis with one end at the origin and the other at x→∞. It carries
- The kinetic energy of α-particle emitted in the α-dacay of ₈₈Ra²²⁶ is
Topics: Behavior of Perfect Gas and Kinetic Theory (34)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply