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प्रश्न
When a white light ray falls on a prism, the ray at its first surface suffers ______.
पर्याय
No refraction
Only dispersion
Only deviation
Both deviation and dispersion
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उत्तर
When a white light ray falls on a prism, the ray at its first surface suffers both deviation and dispersion.
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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
In the formation of spectrum of white light by a prism:
which colour is deviated least?
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.
While performing the experiment to trace the path of a ray of light passing through a glass prism, four students marked the incident ray and the emergent ray in their diagrams in the manner shown below. 
(A) I
(B) II
(C) III
(D) IV
Draw a labelled diagram: Dispersion of light through a prism.
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
Observe the given figure and answer the following questions.
- Which colour light rays bend most?
- Which colour light rays bend least.
- What is the wavelength of violet light rays?
Say TRUE or FALSE
Rainbow is formed by dispersion of which light by water drops
State True or False:
"Wavelength of red light is close to 700 nm.”
