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The speed of electrons in a scanning electron microscope is $1 \times 10^{7} m s^{- 1}$ . If the protons having the same speed are used instead of electrons, then the resolving power of scanning proton microscope will be changed by a factor of:

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Correct option is B

Mass of proton=1837 mass of electron. Resolving power of microscope =RP=2μsinθ1.22λ and λ=hmvSo, RP ∝ mSo, it increases by a factor of 1837.

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The speed of electrons in a scanning electron microscope is 1×107 ms−1. If the protons having the same speed are used instead of electrons, then the resolving power of scanning proton microscope will be changed by a factor of:

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The speed of electrons in a scanning electron microscope is $1 \times 10^{7} m s^{- 1}$ . If the protons having the same speed are used instead of electrons, then the resolving power of scanning proton microscope will be changed by a factor of: