What is 'blind spot' in the eye?

What is meant by a luminous object? Name two luminous objects.

What is the difference between regular reflection and diffused reflection of light? Name one object which can produce regular reflection of light and another which produces diffuse reflection of light.

Which of the following will cause regular reflection of light and which diffuse reflection of light?

(a) Polished wooden table          (b) Chalk powder
(c) Cardboard                             (d) Mirror
(e) Paper                                     (f) Marble floor with water spread over it.

Draw a diagram to show the reflection of light from a plane mirror. Label the following on the diagram:

(a) Plane mirror      (b)Incident ray       (c)Reflected ray       (d)Point of incidence         (e)Normal        (f)Angle of incidence       (g)Angle of reflection