| ⇦ | 
| ⇨ |
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: - In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
- For the radioactive nuclei that undergo either α or β decay, which one
- Suppose for some reasons, radius of earth were to shrink by 1% of present value,
- The radius of curvature of a convave mirror is 24 cm and the imager is magnified
- A train is moving along a straight path with uniform acceleration
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
- For the radioactive nuclei that undergo either α or β decay, which one
- Suppose for some reasons, radius of earth were to shrink by 1% of present value,
- The radius of curvature of a convave mirror is 24 cm and the imager is magnified
- A train is moving along a straight path with uniform acceleration
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