Answer only FOUR questions. Q1: How can you classify the optical processes? Q2: The wavelength limits of the spectrum are about 350-750nm run. In which region of the electromagnetic spectrum this range lie. Convert these limits to Wavenumber cm, Energy (eV) and Frequency (pHz) Q3: The reflectivity of silicon at 633nm is 35% and the absorption coefficient is 3.8x105 m. Calculate the transmission of a sample with a thickness of 10 m. Q4: Define the following terminologies: Stokes vector Critical angle Birefringence materials Q5: Use the Jones matrix to calculate the effect of a horizontal polarizer on light that is initially 45polarized. Note: the horizontal polarized vector is [1]