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Question

In the magnetic meridian of a certain place, the horizontal component of the earth's magnetic field is 0.26 G and the angle of dip is 60o. The magnetic field of the earth at this location is
  1. 0.26 G
  2. 0.42 G
  3. 0.80 G
  4. 0.52 G

A
0.42 G
B
0.52 G
C
0.26 G
D
0.80 G
Solution
Verified by Toppr

The earth's magnetic field is Be and its horizontal and vertical components are He and Hv
cosθ=HeBe
cos60=0.26×104BeT
Be=0.26×10412=0.52×104T=0.52G

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