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How may times...

Question

How may times total internal reflection occurs in the drop for formation of primary and secondary rainbows?

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Solution

When a primary rainbow is formed, it is due to one total reflection in water droplets. A secondary rainbow is formed by light that underwent two internal reflections, and that is what changes the ordering of the colours.

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Q. Question 5
Which of the following phenomena of light are involved in the formation of a rainbow?

(a) Reflection, refraction and dispersion
(b) Refraction, dispersion and total internal reflection
(c) Refraction, dispersion and internal reflection
(d) Dispersion, scattering and total internal reflection

Q. Primary phloem, secondary phloem, internal phloem and included phloem, occur in the stem of ______________.

Q. Rainbow is produced when sunlight falls on drops of rain.
Which of the following physical phenomena are responsible for this?
1.Diffusion
2.Total Refraction
3.Internal reflection

Q. If total internal reflection takes place only when light ray moves from optical denser to optical rarer...
But during rainbow formation total internal reflection takes place when light enters from air to a water drop that is from rarer medium to denser medium which is the exact converse...
what is it happening this way.?

Q. State any two difference between primary rainbow and secondary rainbow.

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