Chapter 5

Question 1

for reflection

What are the parts of a Light Ray Modal

Answer 1

1)Incident ray
2) Angle of incident
3) Normal
4) Angle of Relfection
5) Relected Ray

Question 2

What are the Laws of Reflection?

Answer 2

1) Incident ray, reflected ray and normal at the point of incidence, all lie on the same plane (2D surface)
2) Angle of incidence = Angle of reflection

Question 3

for refraction

What are the Parts of a Light Ray Modal?

Answer 3

1)Incident ray
2) Angle of incident
3) Normal
4) Angle of Refraction
5) Refracted Ray

Question 4

refraction of different optical densities

What are the Characteristics of Refraction?

Answer 4

1) Light bends towards normal when from ** less optically dense** tooptically denser
2) Light bends away from normal from optically denser to optically less dense.

Question 5

When does refraction occur?

from high to low densiity

Answer 5

i < C

Question 6

When does Critical Angle occur?

from high to low densiity

Answer 6

i = C

Question 7

When does Total Internal Reflection occur?

from high to low densiity

Answer 7

i > C

Question 8

What are the types of plane mirrors?

Answer 8

Concave and convex

Question 9

What is a concave mirror?

Answer 9

Curved inwards, image is zoomed in

Question 10

What is a convex mirror?

Answer 10

Curved outwards, image is zoomed out

Question 11

What is the difference between Concave and Convex mirror?

Answer 11

Concave - zoom in
C <– (drawing)
Convex - zoom out
–> C (drawing)