The time period of bar magnet is doubled when magnetic field is reduced

⇦

⇨

The time period of bar magnet is doubled when magnetic field is reduced by same amount. If initial magnetic field is 0.4 x 10⁻⁴ T then find out decrease in the magnetic field

Options

(a) 0.12 x 10⁻⁵
(b) 0.3 x 10⁻⁴
(c) 0.4 x 10⁻⁵
(d) 12 x 10⁻⁵

Correct Answer:

0.3 x 10⁻⁴

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

Related Questions:

1. what should be the velocity of an electron so that its momentum becomes equal
2. A spherical liquid drop of radius R is divided into 8 equal droplets. If the surface
3. A round uniform body of radius R, mass M and moment of inertia I rolls down
4. If the wavelength of incident light falling on a photosensitive material decreases,
5. Huygen’s wave theory could not explain

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