1. If the angle of incidence of light falling on a plane mirror is 30degree, what will be the angle of reflection?:

2. When we stand in front of our dressing table, our left hand seems to be right and right seems to be left. This is called:

3. Light passing through a prism splits into seven colours. This is called:

4. Rainbow is a natural phenomenon showing:

5. In the retina of the eye, the area having no sensory cells is called:

6. If light falls perpendicularly on a plane mirror, what will be the angle in which it will be reflected?:

7. Which of the following is not a luminous object?:

8. To make a kaleidoscope we require:

9. In our eye _______cells can sense colour:

10. An owl can see clearly at night but not day time because it has: