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Sahay Sir > Question Answers > NCERT Exemplar Class 12 > Physics > Chapter 9 - Ray Optics and Optical Instruments > You are given four sources of light each one providing a light of a single colour-red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is 90^∘. Which of the following statements is correct it the source of yellow light is replaced with that of other lights without changing the angle of incidence ?

You are given four sources of light each one providing a light of a single colour-red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is 90^∘. Which of the following statements is correct it the source of yellow light is replaced with that of other lights without changing the angle of incidence ?

Blue The phenomena involved in the reflection of radiowaves by ionosphere is similar to You are given four sources of light each one providing a light of a single colour-red