Fill in the blanks in the following.
(a) A person 1 m in front of a plane mirror seems to be _______________ m
away from his image.
(b) If you touch your ____________ ear with right hand in front of a plane
mirror it will be seen in the mirror that your right ear is touched with
____________.
(c) The size of the pupil becomes ____________ when you see in dim light.
(d) Night birds have ____________ cones than rods in their eyes.