Physics Light and Optics MCQs

A thin film is observed in white light. The color of the film seen at a particular point depends on

In an interference pattern produced by two identical slitd, the intensity at the maxima is I, If eigher slit is closed, the intensity at he maxima is Iο. which of the following is true ?

Which of the following is essential for observing diffraction ?

The condition for observing Fraunhofer diffraction from a single slit is that the light wave front incident on the slit should be

For Fraunhofer diffraction, the frist diffraction minima due to a single slit diffraction is θ=30º at for light 5000Å wavelength. The width of the slit is