⇦ | ⇨ |
The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external magnetic field H is given by
Options
(a) MH cos θ
(b) 2MH sin²(θ/2)
(c) MH sin θ
(d) MH (1-sin²θ)
Correct Answer:
MH cos θ
Explanation:
MH (1 – cos θ) = work done
.·. W = MH [1 – 1 + 2 sin² (θ / 2)] = 2MH sin² (θ / 2)
Related Questions: - When an input signal 1 is applied to a NOT gate, then its output is
- A condenser of 250 μF is connected in parallel to a coil of inductance of 0.16 mH
- A spring of spring constant 5 x 10³ Nm⁻¹ is streched intially by 5 cm from
- When indensity of radiation is increased on a photosensitive plate, then
- A satellite is launched into a circular orbit of radius R around earth while
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When an input signal 1 is applied to a NOT gate, then its output is
- A condenser of 250 μF is connected in parallel to a coil of inductance of 0.16 mH
- A spring of spring constant 5 x 10³ Nm⁻¹ is streched intially by 5 cm from
- When indensity of radiation is increased on a photosensitive plate, then
- A satellite is launched into a circular orbit of radius R around earth while
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
B is the right option