List of top Physics Questions on Quantum Mechanics asked in AP EAPCET

A ball has a mass of \(50\,\text{g}\) and a speed of \(50\,\text{m s}^{-1}\). If the speed is measured within an accuracy of \(2\%\), then the uncertainty in its position (in m) is
\[ (h = 6.626 \times 10^{-34}\,\text{J s}, \ \pi = 3.14) \]

A particle of mass \(1\times10^{-30}\ \text{kg}\) and electric charge \(1.6\times10^{-19}\ \text{C}\) has de-Broglie wavelength \(660\ \text{nm}\). Then kinetic energy of this particle is
\[ (\text{Planck's constant, } h=6.6\times10^{-34}\ \text{J s}) \]

The average number of photons emitted per second by a laser of power \(6.6\times10^{-3}\ \text{W}\) producing a light of wavelength \(600\ \text{nm}\) is
\[ \text{(Planck's constant, } h=6.6\times10^{-34}\ \text{J s)} \]