Early Sunrise and Delayed Sunset

Q.

what is mirage? How is it formed? Explain.

Q. Which of the following are the effects of refraction of light?

1. Inverted image in the concave part of a spoon
2. Advanced sunrise and delayed sunset
3. Formation of a mirage on a hot day
4. Pencil dipped in water appears to be bent or broken

Q.

Explain with the use of a label diagram why stars appear to be higher than they are?

Q. The Sun is visible to us a while before the actual sunrise, and for a while after the actual sunset. Explain.
Atmospheric Layers Apparent position of the Sun Horizon

Q. With the help of suitable diagram, explain the phenomenon of early sunrise and delayed sunset. [3 Marks]

Q.

A mirage is visible only on a hot day.

1. True

2. False

Q. Select the applications of refraction from the following:

1. Stars twinkling
2. Mirage
3. Apparent depth
4. Diffraction
5. Early sunrise
6. Scattering
7. Delayed sunset
8. Reflection