Question

If a magnet is suspended at angle 30° to the magnet meridian, the dip of needle makes angle of 45° with the horizontal, the real dip is?

• A. \( \tan^{-1} \left( \sqrt{3} \right) \)
• B. \( \tan^{-1} \left( \frac{3}{2} \right) \)
• C. \( \tan^{-1} \left( \frac{5}{2} \right) \)
• D. \( \tan^{-1} \left( 2 \right) \)

Hint:

The real dip is determined by the ratio of the angle of the dip to the angle of the needle's deflection from the magnetic meridian.

Answer 1

The Correct Option is D

The real dip can be calculated by using the formula for the magnetic dip angle, considering the given angles and the relationship between them. The real dip angle is calculated by taking the arctangent of the ratio between the two angles.