Question

1) what is a virtual image ?

2) differentiate between concave and convex mirror

3) how will you identify the three mirror concave , convex and plane mirror without touching then

4) what is the focus length of the

plane mirror.

5) state the relation between radius of curvature and focal length of spherical mirror

6) out of convex and concave mirror whose focus is situated behind then mirror

7) if an object is placed at a distance of 0.5 meter in front of a plane mirror, the distance between the object and the image formed by the mirror will

be

a) 2m

b) 1m

c) 0.5 m

d) 0.25 m
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Answer 1

Answer:

In optics, an image is defined as the collection of focus points of light rays coming from an object. A real image is the collection of focus points made by converging rays, while a virtual image is the collection of focus points made by extensions of diverging rays

Answer 2

Answer:

1.an optical image formed from the apparent divergence of light rays from a point, as opposed to an image formed from their actual divergence