Physics, asked by chintanjolapara, 3 months ago

The size of the image of an object by a mirror having a focal length of 20 cm is

observed to be reduced to half of its size.

(a) At what distance has the object been placed from the mirror?

(b) What is the nature of the image and the mirror?

(c) The power of a lens is - 1.5D. What is the nature of this lens?

Answers

Answered by toshan2

a. Object must be placed at 20 cm from the lens.
b. Nature of the image is Virtual and erect and Nature of mirror is Convex
c. Nature of the mirror will Concave because focus will be -ve.

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