In a single-slit experiment, the slit of width a is covered by a thin medium of...

 

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In a single-slit experiment, the slit of width a is covered by a thin medium of thickness t. and refractive index n. The barrier with the single slit is moved directly toward the screen, which is located at a large distance compared to the slit width, at a constant speed of v. Calculate the speed of the first minima approaching the center of the primary maximum for the longest wavelength. In a single-slit experiment, the slit of width a is covered by a thin medium of thickness t. and refractive index n. The barrier with the single slit is moved directly toward the screen, which is located at a large distance compared to the slit width, at a constant speed of v. Calculate the speed of the first minima approaching the center of the primary maximum for the longest wavelength.