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` `SQRT7:1` `1: sqrt7` ANSWER :B