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JEE Main202118 Mar 2021Evening ShiftPhysicsDual Nature of MatterActual

The speed of electrons in a scanning electron microscope is 1 × 10 7 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:

Options

  1. A1837
  2. B1 1837
  3. C1837
  4. D1 1837

Correct answer

A. 1837

Step-by-step solution

Resolving power R P ∝ 1 λ λ = h P = h m v So, R P ∝ m v h R P ∝ P R P ∝ m v R P ∝ m

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