Question

the rectangular surface of a prism are known as refracting surface .reason.​

Answer 1

Answer:

Hence, surfaces which are known as refracting surfaces in the glass prism are rectangular surfaces and cylindrical surfaces. ... In case of a prism, the Snell's Law also gives you the angle by which the light is deviated due to refraction.

Explanation:

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Answer 2

The rectangular surface of a prism is known as refracting surface.

EXPLANATION:

• Prism is a homogeneous, transparent, refracting glass enclosed by means of inclined plane, refracting surfaces at some fixed point called refracting point or perspective of the prism.
• It has  triangular bases and 3 Rectangular lateral surfaces that are inclined to each other.
• It has six vertices and nine edges.  
• Since the bottom of this prism is in a triangular shape, it's miles referred to as a triangular prism.
• Colloquial use of prism typically refers back to the triangular prism.  
• This prism has a complete of five surfaces, out of which the triangular and the rectangular 3 are square.  
• The two triangular faces are opposite to each other.  
• These triangular faces are translucent.  
• So, we use the rectangular faces to observe the Refraction of light.  
• Hence, in a triangular glass prism, the Refracting surfaces are the Rectangular surfaces.