CONCAVE MIRROR ,CONVEX LENS

Question 1

Define Focus, pole, optical centre, radius of curvature, principal axis

Answer 1

Focus: The point where parallel rays meet after reflecting off a mirror.
Pole: The center of a mirror’s reflecting surface.
Optical center: The point within a lens where light rays pass without changing direction.
Radius of curvature: The radius of the sphere that the mirror or lens is part of.
Principal axis: The line that passes through the pole and the center of curvature.

Question 2

1. Lens formula, mirror formula, magnification in lens and mirror.

Answer 2

1/f=1/v-1/u
1/f=1v+1/u
m=v/u
m=-v/u

Question 3

2. Lens maker’s formula – sign conventions – refractive indices of lens and surroundings.

Answer 3

P=i/f= n2-n1/n1 *[1/R1-1/R2]

Question 4

4. P for a plane mirror and plane lens(glass).

Answer 4

f = infinity , Power of plane lens is Zero

Question 5

5. Magnification – 5 ideas

Answer 5

even idk wtf this question is so…

Question 6

6. Identifying the mirrors : m = +1, m = -1 , m> +1 , m < +1 , m > -1, shaving mirror, doctor’s mirror, rear
   view mirror

Answer 6

rear view mirror- convex mirror, m<+1
doctors mirror, shaving mirror -concave mirror m>+1