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What is true dip and apparent dip? And what is the pri.ciple of a dip circle Q. A dip circle is so set that its needle moves freely in the magnetolic meridian .in this position, angle of dip is 40°.now thedip circle is rotated so that the plane in which the needle moves makes an angle 30° with the magnetic meridian.in this position by what angle the needle dip?

What is true dip and apparent dip? And what is the pri.ciple of a dip circle

Q. A dip circle is so set that its needle moves freely in the magnetolic meridian .in this position, angle of dip is 40°.now thedip circle is rotated so that the plane in which the needle moves makes an angle 30° with the magnetic meridian.in this position by what angle the needle dip?

Grade:12

1 Answers

ROSHAN MUJEEB
askIITians Faculty 829 Points
9 months ago

Solution :
tanθ=BVBHtanθ=BVBH
If apparent dip isθ′θ′then
tanθ′=B′VB′H=BVBHcos30∘=BVBH×3√2tanθ′=BV′BH′=BVBHcos30∘=BVBH×32
⇒tanθ′=(23–√)tanθ⇒tanθ′>tanθ⇒θ′>θ

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