Question

Choose any one opotion from given ​

Answer 1

Explanation:

MOI about centre and perpendicular

=MR^2

20×4=80

Answer 2

Answer:

c. 40 gm cm^2

Explanation:

becoz as we know the formula for moment of inertia of a ring about its axis and perpendicular to the plane = 1/2MR^2

             now,  

                         M O I = 1/2.20.2^2

                                    = 40 gm cm^2