Questions
A magnet is suspended in such a way that it oscillates in the horizontal plane. It makes 20 oscillations per minute at a plane where dip angle is and 15 oscillations per minute at a place where dip angle is . The ratio of earth's magnetic field at two places is
detailed solution
Correct option is B
T=2πIMB cosδ⇒ν=12πMB cosδIv=B cosδ or B∝v2cos δB1B2=400cos 30o x cos 60o225=16 x 29 x 3 x 12=16 : 93Talk to our academic expert!
Similar Questions
The time period of a freely suspended magnet is 4 seconds. If it is broken in length into two equal parts and one part is suspended in the same way, then its time period will be
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