Ray Optics and Optical Instruments - Result Question 57
60. Rainbow is formed due to a combination of
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(a) dispersion and total internal reflection
(b) refraction and absorption
(c) dispersion and focussing
(d) refraction and scattering
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Answer:
Correct Answer: 60. (a)
Solution:
- (a) Rainbow is formed due to combination of total internal reflection and dispersion.
Rainbow is formed due to the dispersion of light suffering refraction and TIR in the droplets present in the atmosphere. To observe rainbow observer should stand its back towards sun.
