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Questions  

At a place, the horizontal and vertical intensities of earth's magnetic field is 0.30 gauss and 0.173 gauss, respectively. The angle of dip at this place is

a
30o
b
90o
c
60o
d
45o

detailed solution

Correct option is A

tanϕ=BVBH=0.1730.30=1.733.0=33=13⇒ϕ=30o

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The values of the apparent angles of dip in two planes at right angles to each other are 30o and 45o. Then the true value of the angle of dip at the place is 


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