Q.Let the total energy of a particle executing simple harmonic motion with angular frequency 1 rad s$^{-1}$ is 0.256 J. If the displacement of the particle at time $t = \dfrac{\pi}{2}$ s is [figure/value corrupted in the source scan], then the amplitude of motion is a) 8 cm b) 16 cm c) 32 cm d) 64 cm