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 your right hand infront of a plane mirror, it will be seen in the mirror that yourright ear is touched with your _________.
(c) The size of the pupil becomes ________ when you see in dimlight.
(d) Night birds have _________ cones than rods in their eyes.
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 your right hand infront of a plane mirror, it will be seen in the mirror that yourright ear is touched with your _________.
(c) The size of the pupil becomes ________ when you see in dimlight.
(d) Night birds have _________ cones than rods in their eyes.
(a) A person 1 m in front of a plane mirror seems to be __2 __m away from his image.
(Object distance and image distance are the same from a planemirror. The image of a person 1 m in front of a mirror is 1 m back tothe mirror. Hence, the image is 1 + 1 = 2 m away from the person.)
(b) If you touch your __left__ ear with your right hand infront of a plane mirror, it will be seen in the mirror that yourright ear is touched with your _left hand_.
(This is because of lateral inversion of images formed in a planemirror.)
(c) The size of the pupil becomes __large__ when you see indim light.
(In dim light, the amount of light entering the eye is very little.To increase the amount of light, the pupil expands.)
(d) Night birds have __less__ cones than rods in their eyes.
(Night birds can see in the night, but not in the day. They have ontheir retina a large number of rod cells and only a few cones.)
(a) A person 1 m in front of a plane mirror seems to be __2 __m away from his image.
(Object distance and image distance are the same from a planemirror. The image of a person 1 m in front of a mirror is 1 m back tothe mirror. Hence, the image is 1 + 1 = 2 m away from the person.)
(b) If you touch your __left__ ear with your right hand infront of a plane mirror, it will be seen in the mirror that yourright ear is touched with your _left hand_.
(This is because of lateral inversion of images formed in a planemirror.)
(c) The size of the pupil becomes __large__ when you see indim light.
(In dim light, the amount of light entering the eye is very little.To increase the amount of light, the pupil expands.)
(d) Night birds have __less__ cones than rods in their eyes.
(Night birds can see in the night, but not in the day. They have ontheir retina a large number of rod cells and only a few cones.)
