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Which phenomenon is shown by the following diagram?

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in Engineering Physics II by (679k points)
Which phenomenon is shown by the following diagram?

(a) Scattering of light

(b) Dispersion of light

(c) Primary Rainbow Formation

(d) Secondary Rainbow formation

I got this question in my homework.

This key question is from Light topic in portion Optics of Engineering Physics II

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Right choice is (d) Secondary Rainbow formation

To explain: In the case of secondary rainbow formation, the light rays undergo internal reflection twice inside the drop. The intensity of light, in this case is, reduced. Also, the order of the colors is reversed as shown in the figure.

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