| ⇦ | 
| ⇨ |
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 Galilean telescope has an objective of focal length 100 cm and magnifying power 50
- If the feedback voltage is increased in a negative feedback amplifier, then
- If radius of earth’s orbit is made 1/4, the duration of a year will become
- The mean distance between the atoms of iron is 3 x 10⁻¹⁰ m and interatomic force
- A body is moving in a vertical circle. The string must remain taut at the highest point
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A Galilean telescope has an objective of focal length 100 cm and magnifying power 50
- If the feedback voltage is increased in a negative feedback amplifier, then
- If radius of earth’s orbit is made 1/4, the duration of a year will become
- The mean distance between the atoms of iron is 3 x 10⁻¹⁰ m and interatomic force
- A body is moving in a vertical circle. The string must remain taut at the highest point
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