Light

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. Concave lens the light falling on it.
2. Doctors use for examining eyes, ears, nose, throat and teeth.
3. is used as a side view mirror in motor vehicles.
4. A virtual image larger than the object can be produced by a
5. The property that light travels in a straight line is called
6. We change the path of light by placing a or in its path.
7. When a ray of light is incident on the mirror surface, then the mirror changes the direction of .
8. When light falls on a polished surface, they change the direction of light falling on it in a well defined manner. This is called .
9. The extent of reflection depends upon and of the surface.
10. We need a for reflection