Advertisements
Advertisements
प्रश्न
The adjacent diagram shows two right-angled isosceles prisms A and B. Complete the diagram to show the path of rays P and Q emerging out of the prism B. What principles have you used to complete the diagram?
Advertisements
उत्तर
The completed ray diagram is shown in the figure.
Following two principles are used to complete the diagram:
(1) A ray of light incident normally on the interface of two media passes undeviated.
(2) A ray of light striking the interface of two media (glass and air) from glass, at an angle of incidence, equal to 45° (which is greater than the critical angle = 42°) suffers total internal reflection.
APPEARS IN
संबंधित प्रश्न
State the relation between the critical angle and the absolute refractive index of a medium.
Which colour of light has a higher critical angle? Red light or green light.
What is total internal reflection?
Prove the statement.
A rainbow is the combined effect of the refraction, dispersion, and total internal reflection of light.
How does a ray of light bend when it travels from when it is normal to the interface of the two media.
Name the factors affecting the critical angle for the pair of media.
What is meant by the term ‘critical angle’?
Complete the following diagram to show the path of the ray of a single colour in the diagram as if enters in and emerges out of the prism. Mark the angles wherever necessary. (Critical angle for glass = 42°).
Optical Fibres are based on the phenomenon of dispersion.
A ray of light passes through a prism of refractive index `sqrt2` as shown in the figure. Find:
- The angle of incidence (∠r2) at face AC.
- The angle of minimum deviation for this prism.
