A bullet of mass \(10^{-2}\) kg and velocity \(200\) m/s gets embedded inside the bob of mass \(1\) kg of a simple pendulum. The maximum height that the system rises by is_____ cm.
Consider two arrangements of wires. Find the ratio of magnetic field at the centre of the semi–circular part.
Consider the following compounds. Arrange these compounds in a n increasing order of reactivity with nitrating mixture. The correct order is :