Choose any 3 different optical devices from the 6 covered in Lecture. For each of the chosen optical devices, explain which wave phenomenon (or phenomena) enable the working of that

device(7 marks) ) Discuss how the phenomena identified in part (a) enable the working of each device, and explain how the combination of diffraction and interference shows the wave nature of light[8 marks) O When using a double slit / diffraction grating, what information (numerical data) is needed in order to measure the wavelength of light? What is the key assumption about slits?[8 marks) ) What is polarisation, and how can it be used to demonstrate the transverse-[7 marks]wave-nature of light?

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