If we hold a page of a book in front of a mirror , we can see laterally inverted letters in the mirror. Why does it happen?

If wehold a page of a book in front of a mirror, we see laterally inverted letters in the mirror. Why does it happen?

In order to see the full image of a person standing in front of a mirror, the minimum height of the mirror must be half the height of the person. Explain.

Fill in the blank: To see the full images of a person standing in front of a plane mirror, the minimum height of the mirror must be……the heigth of the person.

The number of ways in which we can post 5 letters in 10 letter boxes is

In order to see the full image of a person standing in front of a mirror, the minimum height of the mirror must be ……….. .

Answer the following questions: The focal length of a concave mirror is 15cm. Where should on object be placed in front of this mirror so as to obtain an image which is real, inverted and of the same size as the object? Justify your answer.

Why do we see moonlight ?

A person standing 12 cm away from mirror A of focal length 10 cm see his image inverted and enlarged. When the mirror A is replaced by mirror B of same focal length the person observes diminished and erect image. Mirrors A and B are respectively.

Answer the following questions:Make two sufficiently long, identical tubes out of a cardboard. Arrange them on a table, in front of a wall as shown in figure . Place a clock near the end of one of the tubes and try to hear the ticking of the clock at the end of the other tube by placing your ear there. Adjust the angles of the two tubes till you can hear the sound very clearly Measure the angle of incidence theta_1 and the angle of reflection theta_2 . Try to see if they are related in any way. In the experiment, what will happen if you lift one of the tubes to some height?

Answer the following : What type of image do we see in a mirror ? What happens to the left and right sides ?