An object takes 1 second to slide down a rough 45^(@) inclined plane. The time taken to slide down a smooth 30^(@) inclined plane having the same slope length is (mu = 0.5)

An object takes 1 second to slide down a rough 45^(@) inclined plane.

1.	An object takes 1 second to slide down a rough 45^(@) inclined plane. The time taken to slide down a smooth 30^(@) inclined plane having the same slope length is (mu = 0.5)
Answer» `SQRT(2)s` `(1)/(sqrt(2))s` `(1)/(2sqrt(2))s` `2^(-1//4)s` ANSWER :D