Fundamentholfundamenthol
JEE Main2019Physics
Q.

A magnetic compass needle oscillates 30 times per minute at a place where the dip is 45°, and 40 times per minute where the dip is 30°. If B1 and B2 are respectively the total magnetic field due to the earth at the two places, then the ratio B1/B2 is best given by : 

  1. A

    2.2

  2. B

    0.7

  3. C

    3.6

  4. D

    1.8

Solution

← Back to full paper

Practice more Physics

Concept-wise practice with instant solutions on Fundamenthol.

Start practicing →