Question
Question: A magnetic needle suspended horizontally by an unspun silk fibre, oscillates in the horizontal plane...
A magnetic needle suspended horizontally by an unspun silk fibre, oscillates in the horizontal plane because of the restoring force originating mainly from
A
The torsion of the silk fibre
B
The force of gravity
C
The horizontal component of earth's magnetic field
D
All the above factors
Answer
The horizontal component of earth's magnetic field
Explanation
Solution
