(a) What is the essential condition for Rayleigh scattering ? (b) In Rayleigh scattering, how is intensity of scattered light related to wavelength of light ?
What are the essential conditions for two light waves to be coherent ?
A diffraction grating having 600 lines per mm is illuminated normally by light of wovelength 600 Å What is the heghest order of diffraction image that can be seen ?
A diffraction garating has 5,000 rulings per centimetre. What is the second order diffraction angle for violent light ( lamda = 500 nm).
The size of the obstacel in order to observe diffraction fo light must be
