LSCPHYS1: NATURE OF LIGHT; REFLECTION AT PLANE SURFACES Assignment

Applications of plane mirrors

Plane mirrors are applied in many instances. Can you list the applications of plane mirrors common at your home and elsewhere?

Exercise

1. How can you demonstrate that light travels in straight lines?
2. What is shadow?
3. Explain how a shadow from a point source is How does it differ from the shadow formed from an extended source of light?
4. How does solar eclipse occur?
5. What would happen if there was no reflection? Explain your
6. An object is placed 20 cm from a plane If the object is moved 2 cm away from the mirror, what will be the distance between the object and its image?
7. A pin-hole camera of length 20 cm is used to view the image of a tree of height 12 If the image of the tree is 40 cm away from the pin- hole, calculate the height of the image of the tree obtained on the screen.