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

For spherical mirror the relationship between radius of curvature R and focal length is

A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by

The resolution limit of eye is 60 s. At a distance of X km from the eye two persons stand with lateral separation of 3 m. For the two persons to be just resolved by eye, X should be