(b) A person 1 m in front of a plane mirror seems to be __2__m away from his image.
(b) If you touch your __left__ ear with right hand in front of a plane mirror it will be seen in the mirror that your right ear is touched with the __left hand__.
(c) The size of the pupil becomes __large__ when you see in dim light.
(d) Night birds have __fewer__ cones than rods in their eyes