Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 5 (Q.No. 14)
14.
During secular variation of magnetic meridian at different places
range of oscillations is constant
period of oscillation is constant
range and period of oscillation both vary
period of oscillation only varies.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Shahzaib Rao said:   3 years ago
The magnetic meridian swings like a pendulum. It swings in one direction for a long time (100 to 200 years) and gradually comes to rest and then swings in the opposite direction.

The change produced annually by secular variation amounts in different places from 0 to 12 minutes (Period) but does not remain constant at any place.
(1)

Chaitanya said:   4 years ago
Can anyone please explain?

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