Physics, 20.04.2020 23:01 broyochey1
In a physics lab, light with a wavelength of 540 nm travels in air from a laser to a photocell in a time of 16.5 ns. When a slab of glass with a thickness of 0.820 m is placed in the light beam, with the beam incident along the normal to the parallel faces of the slab, it takes the light a time of 21.5 ns to travel from the laser to the photocell.
What is the wavelength of the light in the glass? Use 3.00×10^8 m/s for the speed of light in a vacuum.
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