Question

If the image formed by a lens for all positions of
An object placed in front of it always ere t and dimnished, what is the nature of the lens? Draw a Ray diagram to justify your answer. If the numerical value of power of this lens is 10d, what is the focal length in catersian system? ​

Answer 1

Answer:

lens 2 is the answer because it is the right answer

Answer 2

Answer:

Explanation:

The type of lens will be  a concave lens. This is because, the image formed by the concave mirror in all it's cases will be virtual and erect. The image will also be diminished from the object size.

Power = 10D  

Hence,   10D = -1/f

therefore,  f = -1/10 = -0.1 m (focal length is negative of concave lens)

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