Question

(i) Draw a ray diagram to show the formation of image by concave mirror when an
object is placed in front of the mirror between its pole and principal focus.
(ii) in the above ray diagram mark the object distance and image distance with their
proper sign as per the new Cartesian sign convention and state how these distances
are related to the focal length.
(iii) Find the power of a lens which forms a real image twice the size of the object
placed at a distance of 20cm from its optical centre.​

Answer 1

Answer:

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