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12th Class Physics Wave Optics / तरंग प्रकाशिकी Question Bank Case Based (MCQs) - Wave Optics

  • question_answer
    How the waveform will look like outside the door of the hall?

    A) Sound repeater 

    B) Sound reflector   

    C) Localized sound source

    D) None of the above

    Correct Answer: C

    Solution :

    Option [c] is correct. Explanation: Sound spreads out well through a gap whose width is slightly, smaller than 11 the wavelength of the sound wave as if it is a localised source of sound.


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