List of top Physics Questions on Optics asked in Assam CEE

Diffraction of light involves
A point object is placed at a distance of 25 cm from a thin plano-convex lens of focal length 20 cm. The plane surface of the lens is now silvered. The image created by the system is at:
A ray of light passes through four transparent media with refractive index \(n_1, n_2, n_3, n_4\) as shown in the figure. The surfaces of all media are parallel. If the emergent ray ST is parallel to the incident ray PQ, we must have: