two objects of masses m1 and m2 fall freely from height h1 and h2 in a vertical plane respectively.The ratio of time taken by them is how much by reaching the ground?

Answer 1

Didn't Galileo do this experiment in Pisa?

h=1/2 g t^2

so t1/t2=sqrt(h1/h2)

Answer 2

m1/m2