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A ray of light is normally incident on one face of an equilateral glass prism. Answer the following: what will be the angle of incidence at the second face of the prism? - Physics

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प्रश्न

A ray of light is normally incident on one face of an equilateral glass prism. Answer the following:  

What will be the angle of incidence at the second face of the prism? 

थोडक्यात उत्तर
आकृती

उत्तर

As the prism is equilateral, A = 60° and r1 = 0°. So, at the second face of the prism, the angle of incidence will be 60°.

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Refraction of Light Through a Prism
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Refraction of Light at Plane Surfaces - Exercise 4 (B) 1 [पृष्ठ ८८]

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सेलिना Physics [English] Class 10 ICSE
पाठ 4 Refraction of Light at Plane Surfaces
Exercise 4 (B) 1 | Q 18.3 | पृष्ठ ८८

संबंधित प्रश्‍न

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.

  1. How is the angle of emergence ‘i2’ related to the angle of incidence ‘i1’.
  2. What can you say about the angle of deviation in such a situation?

A light ray of yellow colour is incident on an equilateral glass prism at an angel of incidence equal to 48° and suffers minimum deviation by an angle of 36°.

  1. What will be the angle of emergence?
  2. If the angle of incidence is changes to (a) 30°, (b) 60°, state whether the angle of deviation will be equal to, less than or more than 36°?

Which of the two prism, A made of crown glass and B made of flint glass, deviates a ray of light more? 


A ray of light is normally incident on one face of an equilateral glass prism. Answer the following:

Will the light ray suffer minimum deviation by the prism? 


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.


A ray of light incident at an angle of incidence 48° on a prism of refracting angle 60° suffers minimum deviation. Calculate the angle of minimum deviation. 

[Hint: δmin = 2i - A]


When white light enters a prism, it gets split into its constituent colours. This is due to:


Assertion: The light emerges from a parallel-sided glass slab in a direction perpendicular to that in which enters the glass slab.

Reason: The perpendicular distance between the original path of the incident ray and the emergent ray coming out of the glass slab is called lateral displacement of the emergent ray of light.


Draw a ray diagram showing the dispersion through a prism when a narrow beam of white light is incident on one of its refracting surfaces. Also indicate the order of the colours of the spectrum obtained.


The angle between two plane rectangular refracting surfaces of a prism is called as


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