A small magnet `M` is allowed to fall through a fixed horizontal conducting ring `R`. Let `g` be the acceleration due to gravity. The acceleration of `M` will be

Options

A. (a) `ltg` when it is above `R` and moving toward `R`
B. (b) `gtg` when it is above `R` and moving toward `R`
C. ( c) `ltg` when it is below `R` and moving away from `R`
D. ( d) `gtg` when it is below `R` and moving away from `R`

Answer

A, C

Explanation

(a,c):
Use Lenz's law. The motion of ring will be opposed.