Question

(1) which property of concave mirror is utilised for using then a s shaving Mirrors (1) light passes through a rectangular glass slab and throw a regular glass prism using proper diagram explain in what way does the direction of the two emergent beans differs with respect to the incident beam of light (3) a concave lens has a focal length of 50 cm calculate its power

Answer 1

1. Objects are magnified
3.f=50 cm = 0.5 m
P=1/f P= 2Dioptre