Write a activity to finding the normal to a curved surface..
( NOTICE :- please Don't write wrong or silly answers )
Answers
Answer:
-Take a small piece of thin foam or rubber.
-Put some pins in a straight line on the foam.
-All these pins are perpendicular to the foam.
-If the foam was considered as a mirror, each pin would represent the normal at the point.
-Any ray incident at the point where the pin makes contact with the surface will reflect at the same angle the incident ray made with the pin - normal.
-Now bend the foam piece inwards.
-The pins still represent the normal at various points.
-You will observe that all the pins tend to coverage at a point.
---This will be appear like a concave mirror.
-Now bend the foam piece outwards.
-The pins seem to move away from each other that means they diverge.
-The pins still represent the normal at various points.
---This will be appear like a convex mirror.
I hope my efforts will not get ruin and you'll find these answer helpful:)