At some location on earth the horizontal component of earth's magnetic field is 
. At this location, magnetic needle of length 
and pole strength 
is suspended from its mid-point using a thread, it makes 
angle with horizontal in equilibrium. To keepthis needle horizontal, the vertical force that should beapplied at one of its ends is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
JEE Main 2019
using, 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The energy required to take a satellite to a height above Earth surface (radius of Eareth ) is a…
A satellite is moving with a constant speed v in circular orbit around the earth. An object of mass…
Two stars of masses each, and at distance rotate in a plane about their common centre of mass O. …
A satellite is revolving in a circular orbit at a height h from the earth surface, such that where…
A straight rod of length L extends from to . The gravitational force it exerts on point mass at …
A satellite of mass M is in a circular orbit of radius R about the centre of the earth. A meteorite…