Advertisements
Advertisements
Question
What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.
Advertisements
Solution
Magnetic declination is the angle of the horizontal plane between the magnetic North and the geographic North (or true North). This angle is shown in figure by symbol θ.
The angle of declination is different at different places on the earth surface and it also changes at a place with time. The declination is taken positive if the magnetic North is towards the east of the true North as in figure and is negative if the magnetic north if towards the west of the true North.
APPEARS IN
RELATED QUESTIONS
Tick the most appropriate answer.
The surest test of magnetism is
Give a reason for the following.
Iron is a magnetic substance.
If a magnet attracts a piece of metal, that piece must be made of ______.
Select the correct option:
The substance which form a strong temporary magnet is:
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic, north.
The figure shows a freely suspended magnet in the rest position. Copy the diagram and on its show:
- Angle of declination
- Angle in dip
Draw the magnetic flux pattern near a bar magnet placed with its axis in the magnetic meridian and the south pole pointing towards geographic north.
Distinguish between
Natural and artificial magnets.
Which is not attracted by a magnet?
Observe the pictures A and B given in figure carefully.
Which of the following statement is correct for the above given pictures?
