Two plane mirrors of lingth L are separated by distance L and a man `M_(2)` is standing at distance L from the connecting line of mirrors as shown in figure. A man `M_(1)` , is walking in a straight line at distance 2 L parallel to mirrors at speed u,then man at O will be able to see image of `M_(1)` ,for total time:

A man is standing at distance x from a plane mirror in front of him. He wants to see the entire wall in mirror which is at distance. y behind the man. Find the minimum size of the mirror required.

A man is standing at distance x from a plane mirror in front of him. He wants to see the entire wall in mirror which is at distance. y behind the man. Find the minimum size of the mirror required.

You are standing at a distance 2 metre from a plane mirror. What is the distance of your image from the mirror ?

The focus of a parabolic mirror as shown in the figure alongside is at a distance of 6cm from its vertex. If the mirror is 20cm deep, find the distance L.M.

Two bigmirrors A and B are fitted side by side on a wall. A man is standing at such a distance from the wall that he can see the erect image of his face in both the mirrors. When the man starts walking towards the mirrors, he finds that size of his face in mirror A goes on increasing but that in mirror B renaubs the same.

A point source of light B is placed at a distance L in front of the center of a mirror of width d hung vertically on a wall. A man walks in front of mirror along a line parallel to the mirror at a distance 2L from it as shown in Figure. The greatest distance over which he can see the image of the light source in the mirror is

A point source of light B is placed at a distance L in front of the centre of a mirror of width d hung vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 2L from it as shown. The greatest distance over which he can see the image of the light source in the mirror is