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Q1: True meridians are generally preferred to magnetic meridians because

A these converge to a point

B these change due to change in time

C these remain constant.

D None of these.

ANS:C - these remain constant.

True meridian: Geographic North pole and the south pole is the called the earth true meridian.

Magnetic meridian: The magnetic north pole and south pole direction is called Magnetic meridian.

THE MAGNETIC MERIDIAN CHANGES WITH TIME, so it not good to preferred in fieldwork.

The true meridian (geographic north-south pole direction) remains constant always.

So, the answer is "C".



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