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प्रश्न
How are critical angles related to the refractive index of the medium?
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उत्तर
संबंधित प्रश्न
You are given prisms made of crown glass and flint glass with a wide variety of angles. Suggest a combination of prisms which will
(a) deviate a pencil of white light without much dispersion,
(b) disperse (and displace) a pencil of white light without much deviation.
What do you understand by the deviation produced by a prism? Why is it caused?
(i) Define critical angle.
(ii) State one important factor which affects the critical angle of a given medium.
Make the correct choices for each of the following :
Total Internal reflection takes place when
(where ∠i = angle of incidence, ∠r = angle of refraction, ∠C = critical angle)
Images formed by totally reflecting prisms are brighter than the image formed by ordinary reflected light, why?
Choose the correct option.
Consider the following phenomena/ applications: P) Mirage, Q) rainbow, R) Optical fibre and S) glittering of a diamond. Total internal reflection is involved in
Choose the correct option.
Angles of deviation for extreme colours are given for different prisms. Select the one having maximum dispersive power of its material.
Answer the following question.
Why is prism binoculars preferred over traditional binoculars? Describe its working in brief.
The entire light is reflected back into the denser medium is called ______.
