JEE Main 2004 — Magnetic Properties Of Matter Question with Solution
From: AIEEE 2004
Question
The length of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer is The magnet is cut along its length into three equal parts and these parts are then placed on each other with their like poles together. The time period of this combination will be
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
where
When the magnet is cut into three pieces the pole strength will remain the same and
We have, Magnetic moment
Pole strength
New magnetic moment,
When the magnet is cut into three pieces the pole strength will remain the same and
We have, Magnetic moment
Pole strength
New magnetic moment,
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Magnetic Properties Of Matter chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2004, covering the Magnetic Properties Of Matter chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.