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प्रश्न
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
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उत्तर
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (b) 700 nm |
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संबंधित प्रश्न
State the cause of dispersion of white light passing through a glass prism. How did Newton show that white light of sun contains seven colours using two identical glass prisms. Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the focus of the first prism.
Draw a ray diagram to explain the term angle of deviation.
In the following diagram the correctly marked angles are :
(a) ∠A and ∠e
(b) ∠i, ∠A and ∠D
(c) ∠A ∠r and ∠e
(b) ∠A ∠r and ∠D
Fill in the blank with suitable word:
When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
How does the speed of light determine the optical density of a medium?
A ray of white light falls on a prism. Draw a ray diagram to show that the prism disperses the white light.
What conclusion do you draw about the nature of white light in part (b)?
In which of the following four diagrams is the correct path of a ray of light passing through a glass prism shown ?
If white light is used in same way what change is expected in the emergent beam?
The phenomenon of splitting of light into its component colours is ___________ .
Distinguish between an impure spectrum and a pure spectrum.
Write the range of wavelength of the visible spectrum.
Sunlight entering through a narrow aperture falls on a prism. Draw a neat labelled ray diagram to show the formation of the spectrum on a screen. Name the colour obtained nearer the base of the prism.
Draw a neat and labelled diagram for dispersion of light.
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
A ray of light is incident at 45° on an equilateral prism in the diagram below.
- Name the phenomenon exhibited by the ray of light when it enters and emerges out of the prism.
- State the cause of the above phenomenon mentioned by you.
