The property due to which a light ray striking a surface is returned back into the same medium is called:

1. refraction
2. reflex action
3. reflection
4. regression

A ray of light after reflection from a mirror is known as:

1. reflected ray
2. normal
3. incident ray
4. refracted ray

A red rose is seen in green light. It will appear:

1. red
2. blue
3. yellow
4. black

The primary colours are:

1. Red, blue and yellow
2. Magenta, yellow and cyan
3. Red, Blue and cyan
4. Blue, green and red