A given object takes n times more time to slide down a 45^(@) rough inclined plane as it takes to slide down a perfectly smooth 45^(@) incline. The coefficient of kinetic friction between the object and the incline is :

A given object takes n times more time to slide down a 45^(@) rough in

1.	A given object takes n times more time to slide down a 45^(@) rough inclined plane as it takes to slide down a perfectly smooth 45^(@) incline. The coefficient of kinetic friction between the object and the incline is :
Answer» `(1)/(2-n^(2))` `1-(1)/(n^(2))` `SQRT(1-(1)/(n^(2)))` `sqrt((1)/(1-n^(2)))` ANSWER :B