18. A diffraction grating consists of 500 parallel slits per millimeter. The grating is illuminated along the normal to the grating by a parallel beam of monochromatic light. The first bright line fringes are found at 14.9°on either side of the normal. (a) Find the grating spacing d. (b) Find the wavelength of the light. (c) Find the maximum of the order for constructive interference. (d) Which orders of bright fringes can be seen on the screen.

18. A diffraction grating consists of 500 parallel slits per millimeter. The grating is illuminated along the normal to the grating by a parallel beam of monochromatic light. The first bright line fringes are found at 14.9°on either side of the normal. (a) Find the grating spacing d. (b) Find the wavelength of the light. (c) Find the maximum of the order for constructive interference. (d) Which orders of bright fringes can be seen on the screen.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 76AP: Two microscope slides made of glass are illuminated by monochromatic (=589nm) light incident...

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