What should be the order of the size of an obstacle or aperture for diffraction light?(a) Order of wavelength of light(b) Order of wavelength of obstacle(c) Order in ranges of micrometer(d) Order in ranges of nanometerThis question was posed to me in an online interview.My question is based upon Wave Optics topic in portion Wave Optics of Physics – Class 12

What should be the order of the size of an obstacle or aperture for di

1.	What should be the order of the size of an obstacle or aperture for diffraction light?(a) Order of wavelength of light(b) Order of wavelength of obstacle(c) Order in ranges of micrometer(d) Order in ranges of nanometerThis question was posed to me in an online interview.My question is based upon Wave Optics topic in portion Wave Optics of Physics – Class 12
Answer» RIGHT option is (a) Order of wavelength of light The EXPLANATION: The SIZE of the obstacle or aperture should be of the order of the wavelength of light used. THEREFORE, the size of an obstacle is not of the order of obstacle, or micrometer or nanometer.

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