⇦ | ⇨ |
Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units respectively. The rms speed is
Options
(a) 4 units
(b) 1.7 units
(c) 4.2 units
(d) 5 units
Correct Answer:
4 units
Explanation:
v(rms) = √[(v₁² + v₂²+ ……. + v(n)²) / n] = √[(4+25+9+36+9+25) / 6]
= √(108 /6) = √(18) = 3 √2 = 3 × 1.414 = 4.242 units
i.e. 4 units is the approximately correct answer
Related Questions: - What is the wavelength of light for the least energetic photon emitted
- A thin semicircular conducting ring (PQR) of radius r is falling with its plane
- Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies
- The ratio of the dimensions of planck’s constant and that of the moment of inertia is
- A particle falls towards earth from infinity. Its velocity on reaching the earth
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 wavelength of light for the least energetic photon emitted
- A thin semicircular conducting ring (PQR) of radius r is falling with its plane
- Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies
- The ratio of the dimensions of planck’s constant and that of the moment of inertia is
- A particle falls towards earth from infinity. Its velocity on reaching the earth
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