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प्रश्न
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
उत्तर
Violet
Violet is the colour of white light that has the least wavelength.
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संबंधित प्रश्न
The path of a ray of light passing through a glass prism is shown below:
In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:
(A) O, Y, Z and N,
(B) P, Y, M and Z,
(C) O, X, M and Z,
(D) P, X, Z and N.
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
A beam of white light falls on a glass prism. The colour of light which undergoes the least bending on passing through the glass prism is:
(a) violet
(b) red
(c) green
(d) blue
Why do you not see a spectrum of colours when light passes through a flat pane of glass?
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
State two properties of ultra-violet radiations which differ from visible light.
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
The phenomena of light involved in the formation of rainbow are ______.
