Identify the correct matches
Column – I | Column – II |
A. Tetany | i. Autoimmune disorder |
B. Myasthenia gravis | ii. Decreased bone mass |
C. Gout | iii. Rapid muscle spasms |
D. Osteoporosis | iv. Accumulation of uric acid in joints |
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :