A Hermitian operator A has two normalized eigenstates |1⟩ and |2⟩ with eigenvalues 1 and 2 respectively. If a state |ψ⟩ is defined as |ψ⟩ = cos(φ)|1⟩ + sin(φ)|2⟩ and the expectation value ⟩ψ|A|ψ⟨ = 74, then the value of φ is given by:

Which of the following events is considered a major turning point that fueled Indian nationalism during British rule due to its brutal nature and widespread condemnation?

Which of the following events is considered the first major peasant uprising against the British in India?

Who led the Non-Cooperation Movement in India?