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प्रश्न
White light is dispersed by a prism. Inside the prism, compared to the blue light, the red light ______.
विकल्प
slows down less and refracts more
slows down more and refracts less
slows down more and refracts more
slows down less and refracts less
उत्तर
White light is dispersed by a prism. Inside the prism, compared to the blue light, the red light slows down less and refracts less.
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संबंधित प्रश्न
Define the term angle of deviation.
Write a relation for the angle of deviation (δ) for a ray of light passing through an equilateral prism in terms of the angle of incidence (i1) angle of emergence (i2) and angle of the prism (A).
A ray of light incident at an angle of incidence i1 passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges at an angle of emergence i2.
- How is the angle of emergence ‘i2’ related to the angle of incidence ‘i1’.
- What can you say about the angle of deviation in such a situation?
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers a minimum deviation. How is the angle of emergence related to the angle of incidence in this position.
What should be the angle of incidence for a ray of light which suffers a minimum deviation of 36° through an equilateral prism?
[Hint: A = 60°, i = (A + δmin)/2]
Assertion: When a pencil is partly immersed in water and held obliquely to the surface, the pencil appears to bend at the water surface.
Reason: The apparent bending of the pencil is due to the refraction of light when it passes from water to air.
How will you use two identical prisms so that a narrow beam of white light incident on one prism emerges out of the second prism as white light? Draw the diagram.
The angle between two plane rectangular refracting surfaces of a prism is called as
A monochromatic ray of light is incident on an equilateral prism placed at minimum deviation position with an angle of incidence 45° as shown in the diagram?
- Copy the diagram and complete the path of the ray PQ.
- State two factors on which the angle of deviation depends.
State three factors on which the angle of deviation depends.
