refraction of light on plne surfaces

1. REFRACTION OF LIGHT
ON PLANE SURFACES
•Light
•Refraction
•Total internal reflection

4. Shadow Formation

5. Rectilinear Propagation of light

6. Reflection of light

7. What is Refraction?
The deviation in the path of
light when it passes from one
medium to another medium of
different density is
called Refraction.

25. A medium is any transparent substance
through which light can pass. It is of two types
1.Optically Rarer Medium
An optically rarer medium is that medium
in which the speed of light is more. For
example, water is an optically rarer medium
thanGLASS and air is an optically rarer
medium as compared to both water and glass.
2.Optically Denser Medium
An optically denser medium is that
medium in which the speed of light is less. For
example, water is an optically denser medium
than air, and glass is an optically denser
medium than both water and air.

26. RARER MEDIUM
DENSER MEDIUM
i
r
i>r

31. DENSER
RARER
i
r

32. i
r
rarer
denser
ANGLE OF INCIDENCE > ANGLE OF REFRACTION

33. refraction

35. TOTAL INTERNAL REFLECTION
WHEN LIGHT PASSES FROM
OPTICALLY DENSER MEDIUM TO
OPTICALLY RARER MEDIUM WHEN
ANGLE OF INCIDENCE EXCEEDS
CRITICAL ANGLE THE REFRACTED
RAY COMES BACK INTO THE SAME
MEDIUM

44. TOTAL INTERNAL REFLECTION
DENSER
RARER
CRITICAL
ANGLE

45. CIRCULAR DISC
WATER
STRAW

46. GLASS SLAB
LASER BEAM
REFRACTION OF LIGHT

47. GLASS SLAB
REFRACTION OF LIGHT –RECTANGULAR
GLASS SLAB

48. GLASS SLAB
Lateral shift

49. TOTAL INTERNAL REFLECTION
OPTICAL FIBRE

50. OPTICAL FIBRE IN ENDOSCOPY

52. Total internal reflection

54. BRILLIANCE OF DIAMONDS

55. MIRAGES DUE TO TOTAL INTERNAL
REFLECTION

57. SIMPLE EXPERIMENT TO
DEMONSTRATE TOTAL INTERNAL
REFLECTION

58. REFRACTION OF LIGHT WHEN LIGHT IS
PASSING THROUGH GLASS SLAB

59. VERTICAL SHIFT
GLASS SLAB

60. END