The Hamiltonian operator for a two-level quantum system is H = E0 00 -E0. If the state of the system at t = 0 is given by |ψ(0)⟩ = 1√2 11, then |⟨ψ(0) | ψ(t)⟩|2 at a later time t is:

Which movement aimed to promote Khadi, a hand-spun and handwoven cloth native to India?

Who were prominent leaders associated with the initial phase of the Telangana Rebellion (1946-1951) against the Nizam's rule and feudal landlords?

What was the immediate trigger for the Revolt of 1857?