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Resolving power of an electron microscope through de Broglie wavelength

This type of question, asked 2 times: 2021 Paper 10, 2021 Paper 25. All 2 questions below, oldest first.

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  1. Question 1

    2021 Paper 10

    20
    The speed of electrons in a scanning electron microscope is of the order of 107 ms−110^{7}\ ms^{-1}. If protons having the same speed are used instead of electrons, then the resolving power of the scanning proton microscope will be changed by a factor of:

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  2. Question 2

    2021 Paper 25

    4
    Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: An electron microscope can achieve better resolving power than an optical microscope. Reason R: The de Broglie's wavelength of the electrons emitted from an electron gun is much less than wavelength of visible light. In the light of the above statements, choose the correct answer from the options given below:

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