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प्रश्न
The diagram below shows a point source P inside a water container. Four rays A, B, C, D starting from the source P are shown up to the water surface
1) Show in the diagram the path of these rays after striking the water surface.
The Critical Angle for the water-air surface is 48°.
2) Name the phenomenon which the rays B and D exhibit.
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उत्तर
1) Path of the rays after striking the water surface is shown below:
2) Ray 'B' and ray 'D' exhibit the phenomenon of reflection and total internal reflection (TIR), respectively.
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संबंधित प्रश्न
A ray of light travels from water to air as shown in the diagram given below :
1) Copy the diagram and complete the path of the way. Given the critical angle for water is 48°.
2) State the condition so that internal reflection occurs in the above diagram.
Name the factors affecting the critical angle for the pair of media.
Write the relation between the refractive index and critical angle for a given pair of optical media?
State two advantages of using a right-angle prism as a reflector, rather than a plane mirror.
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.
Answer the following question.
Why is prism binoculars preferred over traditional binoculars? Describe its working in brief.
A green light is incident from the water to the air-water interface at the critical angle (C). Select the correct statement.
A ray of light incident at an angle θ on a refracting face of a prism emerges from the other face normally. If the angle of the prism is 5° and the prism is made of a material of refractive index 1.5, the angle of incidence is ______.
State the condition under which total internal reflection occurs. Give the mathematical expression for total internal reflection.
