मराठी

Two isosceles right-angle glass prisms P and Q are placed near each other as shown in Fig. Complete the path of the light ray entering the prism P till it emerges out of the prism Q.

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प्रश्न

Two isosceles right-angle glass prisms P and Q are placed near each other as shown in Fig. Complete the path of the light ray entering the prism P till it emerges out of the prism Q.

 

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पाठ 4: Refraction of Light at Plane Surfaces - EXERCISE - 4 (D) [पृष्ठ १०२]

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सेलिना Concise Physics Part 2 [English] Class 10 ICSE
पाठ 4 Refraction of Light at Plane Surfaces
EXERCISE - 4 (D) | Q 29. | पृष्ठ १०२

संबंधित प्रश्‍न

Which colour of light has a higher critical angle? Red light or green light.


A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incident is ______.


In the given figure PQ and PR are the two light rays emerging from an object P. The ray PQ is refracted as QS. 

 

  1. State the special name given to the angle of incidence ∠PQN of the ray PQ.
  2. What is the angle of refraction for the refracted ray QS?
  3. Name the phenomenon that occurs if the angle of incidence ∠PQN is increased.
  4. The ray PR suffers partial reflection and refraction on the water-air surface. Give reason.
  5. Draw in the diagram the refracted ray for the incident ray PR and hence show the position of image of the object P by the letter P’ when seen vertically from above.  

Name the principle on the basis of which optical fibres work.


What is meant by the term ‘critical angle’?


Draw a diagram, properly labelled, to illustrate the use of a total reflecting prism (a right-angled isosceles prism) to turn a ray of light through 180°. Name an instrument in which this device is used.


A spherical marble, of refractive index 1.5 and curvature 1.5 cm, contains a tiny air bubble at its centre. Where will it appear when seen from outside?


Solve Numerical example.

A monochromatic ray of light is incident at 37° on an equilateral prism of refractive index 3/2. Determine angle of emergence and angle of deviation. If angle of prism is adjustable, what should its value be for emergent rays to be just possible for the same angle of incidence?


The entire light is reflected back into the denser medium is called ______.


What are the conditions to achieve total internal reflection?


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