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प्रश्न
The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
(a) yellow
(b) orange
(c) red
(d) violet
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उत्तर
violet
The colour violet of white light suffers the maximum refraction on passing through a glass prism as it has the shortest wavelength.
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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.
Why do the component colours of incident white light split into a spectrum while passing through a glass prism, explain
Define the term dispersion of white light.
Draw a ray diagram to show the dispersion of white light.
In the formation of spectrum of white light by a prism:
which colour is deviated most?
What will happen if another similar glass prism is placed upside down behind the first prism?
When a beam of white light is passed through a prism, it splits to form lights of seven colours. Is it possible to recombine the lights of seven colours to obtain the white light again? Explain your answer.
What are the seven colours seen in a rainbow?
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
Define the term dispersion of light.
What do you understand by the term spectrum?
When a white light ray falls on a prism, the ray at its first surface suffers ______.
An object AB is placed in front of a convex lens as shown in fig. 4. Complete the ray diagram and obtain the image formed and state the nature of the image.
Write an Explanation.
Critical angle
When white light enters a glass prism from the air, the angle of deviation is least for ____________.
The periscope is an optical device with a polished surface that reflects the light falling on it.
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
A prism of refractive index `sqrt2` and refracting angle A produces minimum deviation δm of a ray on one face at an angle of incidence 45°, The values of A and δm are, respectively ______.
Observe the given diagram and answer the questions:
- Name the process shown in the figure.
- Name the colour that deviates the most.
- Name the colour that deviates the least.
- Name any one phenomenon in nature which is based on the above process.
- Define ‘spectrum’.
