List of top Physics Questions on Ray optics and optical instruments asked in NEET (UG)

Optical fibre are based on

For a plane convex lens \((µ = 1.5)\) has radius of curvature 10 cm. It is silvered on its plane surface. Find focal length after silvering:

A tall man of height 6 feet, want to see his full image. Then required minimum length of the mirror will be
Light travels through a glass plate of thickness t and having a refractive index p. If c is the velocity of light in vacuum, the time taken by light to travel this thickness of glass is
Ray optics is valid, when characteristic dimensions are
Focal length of a convex lens of refractive index 1.5 is 2 cm. Focal length of lens when immersed in a liquid of refractive index of 1.25 will be