Q.

At a certain place the angle of dip is 30o and the horizontal component of earth's magnetic field is 0.5 G. The earth's total magnetic field (in G), at that certain place, is :

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a

13

b

3

c

1

d

12

answer is A.

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Detailed Solution

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BH=BcosθB=BHcosθ=0.5Gcos3013G

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