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प्रश्न
Angle of deviation is the angle which the ______ ray makes with the direction of ______ray.
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उत्तर
Angle of deviation is the angle which the emergent ray makes with the direction of incident ray.
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संबंधित प्रश्न
What do you understand by the deviation produced by a prism? Why is it caused?
Calculate the speed of light in a medium whose critical angle is 30° ?
The observation made by Swarali while doing the experiment is given below. Based on these write answers to the questions:
Swarali found that the light ray travelling from the denser medium to rarer medium goes away from the normal. If the angle of incidence (i) is raised by Swarali, the angle of refraction (r) went on increasing. However, after certain value of the angle of incidence the light ray is seen to return back into the denser medium.
Questions:
- What is the specific value of∠i called?
- What is the process of reflection of incident rays into denser medium called?
- Draw the diagrams of three observations made by Swarali.
The diagram below shows a light source P embedded in a rectangular glass block ABCD of critical angle 42°. Complete the path of the ray PQ till it emerges out of the block. [Write necessary angles].
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Sine of angle of incidence versus sine of angle of refraction,
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Explain ‘mirage’ as an illustration of refraction.
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Observe the given figure of the raindrop and answer the following questions:
- Label A and B of the given diagram. Why colour will deviate most.
- Name the phenomenon shown in label C.
The critical angle for crown glass, which has a refractive index of 1.52, is:
