Advertisements
Advertisements
प्रश्न
A ray of monochromatic light is incident from air into a glass slab. Draw a labelled ray diagram indicating the change in its path till it emerges out of the slab. In the diagram, mark the angle of incidence (i) and the angle of refraction (r) at the first interface. How is the refractive index of glass related to the angles i and r?
Advertisements
उत्तर
The labelled ray diagram is shown in the figure.
Refractive index of glass = `Sin "i"/Sin "r"`
APPEARS IN
संबंधित प्रश्न
Name a prism required for obtaining a spectrum of Ultraviolet light.
How must light travel out of a substance if it is not going to be refracted?
Write the relation between the angle of incidence and the angle of refraction for a medium.
Fill in the blanks to complete the following sentence
When light travels from a denser to a rarer medium, its speed ……………….
A ray of light OP passes through a right angles prism as shown in the adjacent diagram.
(a) State the angles of incidence at the faces AC and BC.
(b) Name the phenomenon which the ray suffers at the face AC.
“A ray of light incident on a rectangular glass slab immersed in any medium emerges parallel to itself.” Draw labelled ray diagram to justify the statement.
Name the phenomenon responsible in the following case:
Apparent bending of a stick in water
A fish swimming in a pond seems nearer than it really is. Explain.
In the diagram alongside a ray of light, PQ is incident normally on one face AB of an equilateral glass prism. What is the angle of incidence at the faces AB and AC?
A ray of light PQ is incident normally on the hypotenuse of a right-angled prism ABC as shown in the diagram given below:
(i) Copy the diagram and complete the path of the ray PQ till it emerges from the prism.
(ii) What is the value of the angle of deviation of the ray?
(iii) Name an instrument where this action of the prism is used.
