# Question: A lens with a power of 10 D is

A lens with a power of + 10 D is used as a simple microscope.

(a) For the image of an object to be seen clearly, can the object be placed infinitely close to the lens, or is there a limit on how close it can be? Explain.

(b) Calculate how close an object can be brought to the lens.

(c) What is the angular magnification at this point?

(a) For the image of an object to be seen clearly, can the object be placed infinitely close to the lens, or is there a limit on how close it can be? Explain.

(b) Calculate how close an object can be brought to the lens.

(c) What is the angular magnification at this point?

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