Solveeit Logo
Login

Question

Question: The angles of dip at the poles and the equator respectively are...

The angles of dip at the poles and the equator respectively are

A

30°, 60°

B

0∘,90∘0 ^ { \circ } , 90 ^ { \circ }

C

45°, 90°

D

90∘,0∘90 ^ { \circ } , 0 ^ { \circ }

Answer

90∘,0∘90 ^ { \circ } , 0 ^ { \circ }

Explanation

Solution

: Since angle of dip at a place is defined as the angle δ\delta which is the direction of total intensity of earth’s magnetic field R makes with a horizontal line in magnetic meridian,

At poles B=BvB = B _ { v } and Bv=Bsin⁡δ\mathrm { B } _ { \mathrm { v } } = \mathrm { B } \sin \delta

∴sin⁡δ=1⇒δ=90∘\therefore \sin \delta = 1 \Rightarrow \delta = 90 ^ { \circ }

At equator and