Advertisements
Advertisements
प्रश्न
Study the following ray diagram:
In this diagram, the angle of incidence, the angle of emergence and the angle of deviation respectively have been represented by
(A) y, p, z
(B) x, q, z
(C) p, y, z
(D) p, z, y
Advertisements
उत्तर
Angle p is the angle of incidence since this angle is formed between the incident ray and the normal.
Angle y is the angle of emergence as it is formed between the emergent ray and the normal.
and angle z is the angle of deviation as it is formed between the emergent ray and the incident ray.
Hence, the correct answer is p, y, z
APPEARS IN
संबंधित प्रश्न
Describe an activity to show that colours of white light splitted by a glass prism can be recombined to get white light by another identical glass prism. Also draw ray diagram to show the recombination of the spectrum of white light.
In the figure given alongside, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism, it produces a spectrum YX on the screen.
State the colour seen (i) at X, and (ii) at Y.
Make two diagrams to explain refraction and dispersion.
How could you show that the colours of the spectrum combine to give white light?
The splitting up of white light into seven colours on passing through a glass prism is called:
(a) refraction
(b) deflection
(c) dispersion
(d) scattering
A ray of white light is passed through a glass prism and a spectrum is obtained on a screen.
- Name the seven colours of the spectrum in order.
- Do the colours have the same width in the spectrum?
- Which of the colour of the spectrum of white light deviates (i) the most, (ii) the least?
In the diagram, a narrow beam of white light is incident on a right-angled isosceles prism. The critical angle of the material of prism for the yellow colour of white light is 45°. Complete the diagram to show the path of blue, yellow, and red colours of white light till they emerge out of the prism.
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
State the colour which bends:
- The most.
- The least while passing through a glass prism.
