Red light from a distant star enters a telescope and then passes through adiffraction grating. From the resulting diffraction pattern, it is found that thefirst-order m = 1 bright fringe occurs at an angle of 25.93 degrees away fromthe axis of the incoming light. The lines of the grating are separated by1.5 x 10-6 m. The wavelength of the light isO 656 nm666 nm639 nm647 nm650 nmNone of these answers are with 2 nm of the wavelength

The order of the bright fringe is given as, m = 1 The angle of diffraction is given as, θ = 25.93o…

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