Question on: JAMB Physics - 2023
Rainbow formation is as a result of the combination of which of the following phenomena?
(i) Reflection
(ii) Dispersion
(iii) Total internal reflection
(iv) Refraction
A
(ii) and (iv) only
B
(i), (iii) and (iv) only
C
(i), (ii) and (iv) only
D
(ii), (iii) and (iv) only
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Correct Option: D
The formation of a rainbow involves refraction, dispersion, and total internal reflection. Here's a more accurate summary:
When sunlight shines on a water droplet, the light undergoes refraction as it enters the droplet. The different colours of light are dispersed due to the varying wavelengths. Finally, total internal reflection occurs inside the droplet, leading to the formation of a rainbow.
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