The leaves appear green when seen in white light. Give a reason.

A rose appears red in white light. How will it appear in:

(i) green light,

(ii) red light?

Give a reason for each of your answers.

A piece of paper appears black in sunlight. What will be its colour when seen in red light?

Meera is in a dance class practicing in front of a flat mirror fixed on a wall. Her teacher draws a line on the floor and asks her to walk 5 steps forward. She notices that her image also seems to walk 5 steps towards her inside the mirror, but her friend sitting on a bench tells her that the image is not actually moving.

Answer the following :

(i) Is Meera's image real or inverted in the mirror?

(ii) What happens to the size of the image when she comes closer to the mirror ?

(iii) If Meera raises her right leg, which leg looks raised in the image ?

(iv) What must a surface have to act as a plane mirror?