| ⇦ | 
| ⇨ |
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: - The distance travelled by a particle starting from rest and moving
- In an orbital motion, the angular momentum vector is
- Two metallic spheres of radii 1 cm and 3 cm are given charges of -1 x 10⁻² C
- The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be.
- Two thin long conductors seprated by a distance d carry currents
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The distance travelled by a particle starting from rest and moving
- In an orbital motion, the angular momentum vector is
- Two metallic spheres of radii 1 cm and 3 cm are given charges of -1 x 10⁻² C
- The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be.
- Two thin long conductors seprated by a distance d carry currents
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