A solid sphere and a spherical shell roll down an incline from rest from same height. The ratio of times taken by them is

A solid sphere and a spherical shell roll down an incline from rest fr

1.	A solid sphere and a spherical shell roll down an incline from rest from same height. The ratio of times taken by them is
Answer» `SQRT((21)/(25))` `(21)/(25)` `sqrt((25)/(21))` `(25)/(21)` ANSWER :A