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Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
Check
Across: 1. These are valid at each point of the surface 3. The ray that comes back from the surface after reflection 5. A line making 90 degrees to the line representing the mirror at the point where the incident ray strikes the mirror 6. The light ray which strikes any surface 8. This object changes the direction of light that falls on it 9. The world Is largely known through this
Down: 1. We see objects with the help of this entering the object that we see 2. A ray of light is an 4. When the whole sheet of paper is spread on the table, it represents one 7. The angle of incidence and the angle of reflection are
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