Solve the crossword puzzle given alongside with the help of the clues given below:

Across 

1. A lens which bends the rays of light outward (7)

6. Change of direction of light by a mirror (10)

9. A term for larger image (9)

Down

2. A lens which bends the rays of light inward ( 6)

3. A term for smaller image (10)

4. A large arc in the sky (7)

5. An instrument using a lens (10)

7. A source of energy (5)

8. Splits sunlight into seven colours (5)