The ground state wave function of an electron in a hydrogen atom is given by ψ(r, θ, φ) = 1√π a03 e−r/a0, where a0 is the Bohr radius. If the position vector is given by r = xî + yî + zk̂, what is the uncertainty (error) in the measurement of Z, i.e., ΔZ?

The arrival of which commission in India triggered widespread protests, including mass hartals across the country in 1928?

Which of the following leaders was instrumental in initiating and leading India’s struggle for independence?

Which of the following viceroys of India is associated with the 'Ilbert Bill' controversy?