| ⇦ | 
| ⇨ |
One coolie takes 1 minute to raise a suitcase through a height of 2 m but the second coolie takes 30 s to raise the same suitcase to the same height. The powers of two coolies are in the ratio of
Options
(a) 1 : 2
(b) 1 : 3
(c) 2 : 1
(d) 3 : 1
Correct Answer:
1 : 2
Explanation:
power P = w / t
P₁ / P₂ = t₂ / t₁ = 30s / 1 minute = 30s / 60s = 1/2
(t₁ = 1 minute ; t₂ = 30 second given)
Related Questions: - According to Hook’s law of elasticity, if stress is increased, the ratio of stress
- Rate of photoelectric emission is proportional to
- A layer of colourless oil spreads on water surface. White light is incident on it
- If particles are moving with same velocity, then maximum de Broglie wavelength will
- The momentum of a photon of energy 1 MeV in kg m/s will be
Topics: Work Energy and Power
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- According to Hook’s law of elasticity, if stress is increased, the ratio of stress
- Rate of photoelectric emission is proportional to
- A layer of colourless oil spreads on water surface. White light is incident on it
- If particles are moving with same velocity, then maximum de Broglie wavelength will
- The momentum of a photon of energy 1 MeV in kg m/s will be
Topics: Work Energy and Power (94)
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