Advertisements
Advertisements
प्रश्न
The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary.

- Copy and complete the path of the rays A and B.
- How do the speeds of these rays differ in glass?
- Are the two refracted rays in glass parallel? Give a reason.
Advertisements
उत्तर

- In glass, speed of orange (A) light is more than that of blue light (B).
- No, the two refracted rays are not parallel to each other as their speeds vary in the glass.
APPEARS IN
संबंधित प्रश्न
A ray of light passes from glass into air. The angle of refraction will be:
(a) equal to the angle of incidence
(b) greater than the angle of incidence
(c) smaller than the angle of incidence
(d) 45°
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 ……………….
Name the colour of white light which is deviated the most on passing through a prism.
What is meant by the statement the critical angle for diamond is 24°?
A student traces the path of a ray of white light through a rectangular glass slab and marks, the angles of incidence (∠i) , refraction (∠r) and emergence (∠e) as shown. Which angle or angles has he not marked correctly?

(A) ∠i only
(B) ∠i and ∠r
(C) ∠i and ∠e
(D) ∠r and ∠e
Draw an í- `delta` graph for a mono chromatic raY through a glass prism of a plane and mark
(i) `delta` m, the angle of mínimum devíation
(íí) Any two values of i for which value of `delta` ís same.
Light passes through a rectangular glass slab and through a triangular glass prism. In what way does the direction of the two emergent beams differ and why?
