The velocity of a body revolving in a vertical circle of radius .r. at the lowest point sqrt(7gr). The ratio of maximum to minimum tensions in the string is

The velocity of a body revolving in a vertical circle of radius .r. at

1.	The velocity of a body revolving in a vertical circle of radius .r. at the lowest point sqrt(7gr). The ratio of maximum to minimum tensions in the string is
Answer» `8:1` `4:1` `SQRT(7):1` `1:sqrt(7)` ANSWER :B