A red laser beam with a wavelength of 656 nm is used to determine the spacing of
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Question:
A red laser beam with a wavelength of 656 nm is used to determine the spacing of a diffraction grating. The first-order peak is observed 46.3 cm from the central maximum on a screen 0.8 m away.
a (9 pts) How many lines/mm is this diffraction grating?
b (9 pts) The same diffraction grating and setup is used to find the wavelength of a maximum on the screen. What is the wavelength of this laser beam?
d (6 pts) How many bright spots can you observe with this unknown laser beam?
Related Book For
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
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