A ball suspended by a thread swings in a vertical plane so that its acceleration in the extreme position and lowest position are equal. The angle `theta` of thread deflection in the extreme position will be

Options

A. `2tan^(-1).(1)/(2)`
B. `tan^(-1).(1)/(2)`
C. `tan^(-1)sqrt2`
D. `tan^(-1)2`

Answer

A