List - I(Block/group in periodic table) | List - II(Element) |
---|---|
(A) Lanthanoid | (I) Ce |
(B) d-block element | (II) As |
(C) p-block element | (III) Cs |
(D) s-block element | (IV) Mn |
Based on their positions in the periodic table:
Therefore, the correct answer is (3): A-I, B-IV, C-II, D-III.
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 :