The earth's magnetic field at a certain place has a horizontal component 0.3 gauss and the total strength 0.5 gauss. The angle of dip is

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tan-134

sin-134

tan-143

sin-135

answer is C.

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Detailed Solution

B2=BV2+BH2 BV=B-BH2=0.52-0.32=0.4Now, tanϕ=BVBH=0.40.3=43⇒ϕ=tan-143

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