| ⇦ |
| ⇨ |
A particle covers half of its total distance with speed v1 and the rest half distance with speed v2. Its average speed during the complete journey is
Options
(a) (v1v2)/(v1+v2)
(b) (2v1v2)/(v1+v2)
(c) (2v1²v2²)/(v1²+v2²)
(d) (v1+v2)/2
Correct Answer:
(2v1v2)/(v1+v2)
Explanation:
Let the tot. distance covered by the particles be 2s. Then
vₐᵥ = 2 s / (s/ v₁ + s/ v₂) = 2 v₁v₂ / v₁ + v₂
Related Questions: - A body with mass 5 kg is acted upon a force F=(-3i+4j) N.If its initial velocity at
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- Colours appear on a thin soap film and soap bubbles due to the phenomenon of
- The energy released by the fission of one uranium atom is 200 MeV.
- An ideal spring with spring constant K is hung from the ceiling and a block of mass
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body with mass 5 kg is acted upon a force F=(-3i+4j) N.If its initial velocity at
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- Colours appear on a thin soap film and soap bubbles due to the phenomenon of
- The energy released by the fission of one uranium atom is 200 MeV.
- An ideal spring with spring constant K is hung from the ceiling and a block of mass
Topics: Motion in Straight Line (93)
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