Bihar Board Class 12 (Science) Optics — practice questions
5 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Bihar Board Class 12 (Science) Optics in the app →The critical angle for total internal reflection at a glass-air interface is $42^\circ$. The refractive index An object is placed $30\,\text{cm}$ in front of a concave mirror of focal length $20\,\text{cm}$. The image diTwo plane mirrors are inclined at an angle of $60^\circ$. The number of images of a point object placed betweeA convex mirror always forms an image of a real object that is:A point source of light is placed at the origin in an isotropic medium. The wavefronts associated with the lig