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प्रश्न
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.
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उत्तर
The diagram is shown below. This device is used in binoculars.
संबंधित प्रश्न
Draw diagram to illustrate the total internal reflection.
Plot a graph between
Sine of angle of incidence versus sine of angle of refraction,
State two advantages of using a right-angle prism as a reflector, rather than a plane mirror.
What is meant by the statement, ‘the critical angle for diamond is 24°’?
Answer the following question.
What are the advantages of optical fibre communication over electronic communication?
Solve Numerical example.
From the given data set, determine angular dispersion by the prism and dispersive power of its material for extreme colours. nR = 1.62 nV = 1.66, δR = 3.1°
Optical fibre communication uses the principle of ______.
A ray of light passes from vacuum into a medium of refractive index µ, the angle of incidence is found to be twice the angle of refraction. Then the angle of incidence is ______.
The angle made by incident ray of light with normal of the reflecting surface is called ______.
