Filming question: What are the uses of various lights? How are they all different? How do you decide on their usage? How can you use natural light to your advantage? Discuss.

Achair of height 1 m is placed 1 m in front of a plane mirror. a girl is standing 3 m behind the chairas shown. find the minimum length of the plane mirror in order that she can see the whole imageof the chair.a. 0.50 mb. 0.75 mc. 0.80 md. 1.00 m