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प्रश्न
What do you understand by the term spectrum?
Explain the term spectrum.
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उत्तर
The colour band obtained on a screen on passing white light through a prism is called the spectrum. It consists of seven constituent colours in the order of VIBGYOR (Violet, Indigo, Blue, Green, Yellow, Orange, and Red).
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संबंधित प्रश्न
A student traces the path of a ray of light through a triangular glass prism for different values of angle of incidence. On analyzing the ray diagrams, which one of the following conclusions is he likely to draw?
(A) The emergent ray is parallel to the incident ray.
(B) The emergent ray bends at an angle to the direction of the incident ray.
(C) The emergent ray and the refracted ray are at right angles to each other.
(D) The emergent ray is perpendicular to the incident ray.
In the following ray diagram the correctly marked angle are:
(a) ∠i and ∠e
(b) ∠A and ∠D
(c) ∠i, ∠e and ∠D
(d) ∠r, ∠A and ∠D
A student is observing a diagram showing the path of a ray of light passing through a glass prism. He would find that for all angles of incidence the ray of light bends:
How does the speed of light determine the optical density of a medium?
You are given a disc divided into seven sectors with colours violet, indigo, blue, green, yellow, orange and red in them. What would be its colour when it is rotated rapidly?
Complete the ray diagram given below to show the nature of light produced on the screen.
Differentiate between a glass slab and a glass prism.
Write an Explanation.
Critical angle
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
State True or False:
"Wavelength of red light is close to 700 nm.”
