Question

Describe an activity to show that the incident ray,reflected ray and the normal,at the point of incidence,all lie in the same plane.

Answer 1

Ans. For this experiment take a plane mirror and stand it on a plane sheet of paper with a block. Now draw an incidence line AB. Now see in the mirror and mark the points on the paper, where you fill the line is travelling after getting reflected from the mirror. Remove the mirror and draw a perpendicular on the mirror line. Join the points to make the reflected ray. You will see that incident ray, reflected ray and normal will be in the same plane, i.e. on the sheet of paper.
may it will help u..

Answer 2

Answer:

take a drawing board and keep the plane mirror vertically upright on it near its centre hold one cylinderical tube (card board),(with and arrow opening it its front) in an insulin portion it its front and touching the mirror direct a powerful torch light into the tube ask friend to hold a second similar cylindrical cube and the matching angle now you remove your tube so that it make different angle with plane mirror