Rainbow Formation

Q. Which of the following statement is wrong?

1. When the light rays undergo two internal reflections within a water drop, a secondary rainbow is formed
2. The order of colours is reversed in the secondary rainbow
3. An observer can see a rainbow when his front is towards the sun
4. Rainbow is a combined effect of dispersion, refraction and reflection of sunlight

Q. Secondary rainblow in the atmosphere is:

1. brighter than the primary rainbow
2. the result of polarization and dispersion of light
3. due to the phenomenon of double refraction
4. formed with red colour on the top
5. formed due to two reflections in the rain drop

Q. Rainbow is caused due to:

1. reflection of sunlight by air molecules
2. refraction of sunlight from water drops
3. dispersion of sunlight from water drops
4. refraction of sun rays by air molecules

Q.

1. Reflection
2. Refraction
3. Dispersion
4. Scattering

Q. A passenger in an aeroplane shall

1. never see a rainbow.
2. may see a primary and a secondary rainbow as concentric circles.
3. may see a primary and a secondary rainbow as concentric arcs.
4. shall never see a secondary rainbow.

Q.

1. refraction, reflection, dispersion and total internal reflection
2. dispersion, refraction, reflection and total internal reflection
3. reflection, refraction, dispersion and total internal reflection
4. total internal reflection, refraction, dispersion and reflection

Q. Rainbow appears due to dispersion of sunlight by _____ .

1. Water droplets
2. Prism
3. Glass block
4. All

Q. Rainbow is formed due to:

1. total internal reflection
2. scattering
3. refraction
4. dispersion and total internal reflection

Q. In the primary rainbow, what is the order in which colours are observed?

1. Violet innermost and red outermost
2. Red innermost and violet outermost
3. Violet, blue, red, yellow
4. Haphazard

Q. After a storm, a man walks out onto his porch. Looking to the east, he sees a rainbow that has formed above his neighbor's house. What time of day it is?

1. Evening
2. Morning
3. Night
4. Dawn