Before Robert Norman worked on 'Dip and Field Concept', his predecessor thought that the tendency of the magnetic needle to swing towards the poles was due to a point attractive. However, Norman showed with the help of experiment that nothing like point attractive exists. Instead, he argued that magnetic power lies is lodestone.
Which one of the following is the problem on which Norman and others worked?
Options
Existence of point attractive
Magnetic power in lodestone
Magnetic power in needle
Swinging of magnetic needle
Solution
Swinging of magnetic needle
Explanation:
The argument is based on the reason for the tendency of a magnetic needle to swing towards the poles. Robert Norman and his predecessor offer different reasoning for this tendency. So, 'Swinging of magnetic needle' effectively expresses the problem they are working on.
