| ⇦ | 
| ⇨ |
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: - The ionisation energy of an electron in the ground state of helium atom is 24.6 eV.
- The control rods used in a nuclear reactor can be made up of
- A block of mass m moving at a velocity v collides with another block of mass 2m
- A photoelectric surface is illuminated successively by monochromatic light of wavelength
- The escape velocity from the earth’s surface is 11 kms⁻¹.A certain planet
Topics: Work Energy and Power
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The ionisation energy of an electron in the ground state of helium atom is 24.6 eV.
- The control rods used in a nuclear reactor can be made up of
- A block of mass m moving at a velocity v collides with another block of mass 2m
- A photoelectric surface is illuminated successively by monochromatic light of wavelength
- The escape velocity from the earth’s surface is 11 kms⁻¹.A certain planet
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