Question

A man walks along the footpath of a circular garden.During his motion along the circular path he makes several rounds.His net displacement will be zero whenever his distance traveled in multiples of ------ * a.Its radius b.Circumference of the circle c.Its diameter

Answer 1

The right answer is circumference of the circle

Answer 2

Answer:

b. circumference of the circle

Explanation:

because when the man arrives again to the initial point walking the circumference the displacement would be zero.

lets consider the circumference to be "A"

Now he walked through the circular path twice so his distance will be 2A but his displacement is zero because he arrived at the same initial point from where he started.