Fill in the blanks in the following:
(a) A person m in front of a plane mirror seems to be __________ m 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.