A parallel beam of monochromatic light of wavelength λ falls normally on a narrow slit of width a. The diffraction pattern is observed on a screen placed perpendicular to the direction of the incident beam. The phase difference between the waves coming from the edges of the slit at the position of the first maximum of the diffraction pattern is

A parallel beam of monochromatic light of wavelength λ falls normally

1.	A parallel beam of monochromatic light of wavelength λ falls normally on a narrow slit of width a. The diffraction pattern is observed on a screen placed perpendicular to the direction of the incident beam. The phase difference between the waves coming from the edges of the slit at the position of the first maximum of the diffraction pattern is
Answer» A parallel beam of monochromatic light of wavelength $λ$ falls normally on a narrow slit of width $a$ . The diffraction pattern is observed on a screen placed perpendicular to the direction of the incident beam. The phase difference between the waves coming from the edges of the slit at the position of the first maximum of the diffraction pattern is

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