Question

If apparent dip at a place 45° to the magnetic
meridian is 30°, then true dip at that place will be
(1) 30°
(2) 45°
(3) Less than 30° (4) Greater than 30°​

Answer 1

Explanation:

Given If apparent dip at a place 45° to the magnetic  meridian is 30°, then true dip at that place will be

(1) 30°

(2) 45°

(3) Less than 30° (4) Greater than 30°

• Now S’ = 30 degree, θ = 45 degree s = ?
• Now kinetic field Bh’ = Bh cos θ
•                                                     = Bh cos 45
•                                          So Bh’ = Bh / √2 -----------1
•            Now tan Δ’ = Bv / Bh’ (vertical component of magnetic field)
•   So  Bv / Bh’ = Bv / Bh / √2
• Or Bv / Bh’ = √2 Bv / Bh
• Or tan Δ’ = √2 tan Δ
• Or tan Δ = 1/√3 x √2
• Or tan Δ = 1 / √6
• Or Δ = tan ^-1 (1 / √6)

Or it will be 22.2 degree

Reference link will be

https://brainly.in/question/3191177