(a):

What is the dual nature of light? What are the different experiments that proved the light behave as a particle and as a wave? Draw electromagnetic spectrum and visible light spectrum by hand correctly in terms of their wavelength.

(b):

What is photon and wave function? Discuss energy, momentum, mass, wavelength, and spin of the photon. Explain why wave function alone is meaningless, discuss the probability density, normalization of the wave function and derive its dimension.