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Draw a schematic and clearly indicate the components of a compound microscope. In a compound microscope,...

Draw a schematic and clearly indicate the components of a compound microscope. In a compound microscope, why must the objective lens (or objective + Tube lens) be a converging lens (or lens system)?

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Answer #1

Above is the schematic diagram of the compound microscope. The image A'B' of the object AB is acting as an object for the eyepiece. The image A'B' must be real to act as an object. So, if the objective is the diverging lens, then A'B' will be a virtual image and can't act as an object for the eyepiece. So the microscope won't work. Therefore, the objective lens must be converting to produce a real image A'B'.

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