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An investigation into single-slit diffraction is carried out. The following measurements are recorded for various colours of light. • The angle (theta, O) to the third dark fringe • • The distance L from the slit to the screen The distance d1 from the central maximum to the second dark fringe The distance d2 between the first and third maximum . The width of the slit w a) Describe, in words, two ways to find the wavelength of the light. ( b) If someone followed those two approaches and found two different wavelengths, what might this tell you? c) What are two possible changes that would each result in an increase in the number of nodal lines visible on the screen? d) What changes would occur if the light is shone through a pair of slits, and why? e) What changes would occur if the light were shone through a diffraction grating? Why?

An investigation into single-slit diffraction is carried out. The following measurements are recorded for various colours of light. • The angle (theta, O) to the third dark fringe • • The distance L from the slit to the screen The distance d1 from the central maximum to the second dark fringe The distance d2 between the first and third maximum . The width of the slit w a) Describe, in words, two ways to find the wavelength of the light. ( b) If someone followed those two approaches and found two different wavelengths, what might this tell you? c) What are two possible changes that would each result in an increase in the number of nodal lines visible on the screen? d) What changes would occur if the light is shone through a pair of slits, and why? e) What changes would occur if the light were shone through a diffraction grating? Why?

Physics for Scientists and Engineers: Foundations and Connections
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter35: Diffraction And Interference
Section: Chapter Questions
Problem 90PQ
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An investigation into single-slit diffraction is carried out. The following measurements are recorded for various colours of light. • The angle (theta, O) to the third dark fringe • • The distance L from the slit to the screen The distance d1 from the central maximum to the second dark fringe The distance d2 between the first and third maximum . The width of the slit w a) Describe, in words, two ways to find the wavelength of the light. ( b) If someone followed those two approaches and found two different wavelengths, what might this tell you? c) What are two possible changes that would each result in an increase in the number of nodal lines visible on the screen? d) What changes would occur if the light is shone through a pair of slits, and why? e) What changes would occur if the light were shone through a diffraction grating? Why?
Transcribed Image Text:An investigation into single-slit diffraction is carried out. The following measurements are recorded for various colours of light. • The angle (theta, O) to the third dark fringe • • The distance L from the slit to the screen The distance d1 from the central maximum to the second dark fringe The distance d2 between the first and third maximum . The width of the slit w a) Describe, in words, two ways to find the wavelength of the light. ( b) If someone followed those two approaches and found two different wavelengths, what might this tell you? c) What are two possible changes that would each result in an increase in the number of nodal lines visible on the screen? d) What changes would occur if the light is shone through a pair of slits, and why? e) What changes would occur if the light were shone through a diffraction grating? Why?
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