Questions
A magnetic needle is free to rotate in a vertical plane, which makes an angle of with the magnetic meridian. If the needle stays in a direction making an angle of with the horizontal , what would be the dip at that place?
detailed solution
Correct option is B
We know the relationship between true dip and apparent dip tanδ1=tanδcosθGiven : Apparent dip δ1=tan-123 ⇒tanδ1 = 23 True dip δ=? ALso , θ=60°∴23=tanδcos60°⇒tanδ=13⇒tanδ=tan30°⇒δ=30°Similar Questions
A certain amount of current when flowing in a properly set tangent galvanometer, produces a deflection of . If the current be reduced by a factor of , the deflection (in degree) would decrease by
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