# For the same objective, find the ratio of the least separation between two points to be distinguished by a microscope for light of 5000Å

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For the same objective, find the ratio of the least separation between two points to be distinguished by a microscope for light of 5000Å and electrons accelerated through 100V used as the illuminating substance.

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where β is the angle subtended by the objective at the object.

For electrons accelerated through 100V the deBroglie wavelength is