Answer :

The primary rainbow is formed by total internal reflection in the raindrop once. It is between 41° to 42°. The secondary rainbow is formed by total internal reflection in the raindrop twice. It is between 51° to 54°. Thus, option (d) is correct. Now, destructive interference is the reason that the band is dark. Hence, (a) is correct. Scattering of light by minute particles happens all over the sky and doesn’t affect the formation of the rainbow or Alexandra’s band. Hence, (b) is incorrect. Moreover, there is no “extra” absorption of light in this region. Hence, (c) is incorrect. This band is not a physical region, but a region formed in our eyes like the rainbows.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

A. A ray of lightPhysics - Board Papers

A ray PQ incidentPhysics - Board Papers

Calculate the radPhysics - Board Papers

Draw a ray diagraPhysics - Exemplar

Between the primaPhysics - Exemplar

The phenomena invPhysics - Exemplar

A passenger in anPhysics - Exemplar