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प्रश्न
What is meant by the term ‘critical angle’?
उत्तर
It is the angle of incidence in the denser medium corresponding to which the angle of refraction in the rarer medium is 90°.
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संबंधित प्रश्न
State the conditions required for total internal reflection of light to take place
What do you understand by the deviation produced by a prism? Why is it caused?
Total internal reflection occurs only when a ray of light passes from a ______ medium to a ______ medium.
Plot a graph between
Angle of incidence versus angle of reflection,
Plot a graph between
Sine of angle of incidence versus sine of angle of refraction,
Write down the relationship between the critical angle and the refractive index of the medium.
State one factor on which a critical angle for a given pair of media depends. The critical angle for the glass-air interface is 45° for the yellow light. Will it be equal to, less than or greater than 45° for (i) red light, (ii) blue light?
Answer the following question.
Why is prism binoculars preferred over traditional binoculars? Describe its working in brief.
What are the examples of total internal reflection in nature?
Find the value of θ in the given figure.
