List of top Physics Questions on Ray optics and optical instruments asked in EAMCET

When a glass lens with n = 1.47 is immersed in a trough of liquid, it looks to be disappeared. The liquid in the trough could be

A glass slab of thickness 8 cm contains the same number of waves as 10 cm long path of water when both are traversed by the same monochromatic light. If the refractive index of water is $ \frac{4}{3} $ , the refractive index of glass is

The effective focal length of the lens combination shown in the figure in - 60 cm. The radii of curvature of the curved surfaces of the Plano-convex lenses are 12 cm each and refractive index of the material of the lens is 1.5. The refractive index of the liquid is:

A light ray in travelling between two media as given below. The angle of incidence on the boundary in all the cases is $30^\circ$. ldentify the correct sequence of increasing order of angles of refraction (1) air to water (2) water to glass (3) glass to water (Refractive indices of glass and water are respectively $\frac{3}{2}$ and $\frac{4}{3}$ )

A thin converging lens is made up of glass of refractive index 1.5. It acts like a concave lens of focal length 50 cm, when immersed in a liquid of refractive index $ \left( \frac{15}{8} \right) $ . The focal length of the converging lens in air is, in metre: