Question

Why do we need a mirror half of the size of the object ?​

Answer 1

Answer:

Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence equals the angle of reflection.

Answer 2

Answer:

If we cover a mirror half than we find complete image of object and

for making we need principal axis and pole and we find complete figure

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