NEET Physics Wave Optics / तरंग प्रकाशिकी NEET PYQ-Wave Optics

  • question_answer
    A parallel beam of fast moving electrons is incident normally on a narrow slit. A fluorescent screen is placed at a large distance from the slit.
    If the speed of the electrons is increased, then which of the following statements is correct?        [NEET 2013]

    A)  Diffraction pattern is not observed on the screen in the case of electrons

    B)  The angular width of the central maximum of the diffraction pattern will increase

    C)  The angular width of the central maximum will decrease

    D)  None of these

    Correct Answer: D


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