| ⇦ | 
| ⇨ |
If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio of their resistances will be
Options
(a) (3:2)
(b) (2:3)
(c) (3:4)
(d) (4:3)
Correct Answer:
(3:2)
Explanation:
P = V² / R
⇒ R₁ / R₂ = P₂ / P₁ = 60 / 40 = 3 / 2 = 3 : 2
Related Questions: - If in a nuclear fusion process, the masses of the fusing nuclei be m₁ and m₂
- If the velocity of sound in air is 350 m/s, thent he fundamental frequency
- Which of the following atoms has the lowest ionisation potential?
- Given the value of Rydberg constant is 10⁷ m⁻¹, the wave number of the last line
- Minority carriers in a p-type semiconductor are
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If in a nuclear fusion process, the masses of the fusing nuclei be m₁ and m₂
- If the velocity of sound in air is 350 m/s, thent he fundamental frequency
- Which of the following atoms has the lowest ionisation potential?
- Given the value of Rydberg constant is 10⁷ m⁻¹, the wave number of the last line
- Minority carriers in a p-type semiconductor are
Topics: Magnetic Effects of Current and Magnetism (167)
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