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प्रश्न
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
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उत्तर
The spectrum is the colour band obtained on a screen when white light passes through a prism. The seven prominent colours obtained in the spectrum of white light, in order are Violet, Indigo, Blue, Green, Yellow, Orange, and Red.
संबंधित प्रश्न
After tracing the path of a ray of light through a glass prism a student marked the angle of incidence (∠i), angle of refraction (∠r) angle of emergence (∠e) and the angle of deviation (∠D) as shown in the diagram. The correctly marked angles are :
(A) ∠i and ∠r
(B) ∠i and ∠e
(C) ∠i, ∠e and ∠D
(D) ∠i, ∠r and ∠e
How could you show that the colours of the spectrum combine to give white light?
Name the process which is involved in the formation of a rainbow.
A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
The seven colours in the spectrum of sunlight in order, are represented as :
In an experiment to trace the path of a ray of light through a glass prism for different values of angle of incidence a student would find that the emergent ray:
(A) is parallel to the incident ray
(B) perpendicular to the incident ray
(C) is parallel to the refracted ray
(D) bends at an angle to the direction of incident ray
Differentiate between a glass slab and a glass prism.
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
