What Is An Image

What is image ? Explain its types.

What is the image of the point (2, 3) in the line y=-x ?

What is the image of the point (6, 3, -4) with respect to yz- plane ? '

What is the image distance of an object which is placed at an infinite distance ?

What is the image of point (2,-3) under x-axis?

What is the image of the point (—2, 3, —5) respect to the zx-plane ?

A coin is placed 10cm in front fo a concave mirror. The mirror produces a real image that has diameter 4 times that of the coin. What is the image distance.