A certain type of laser emits light that has a frequency of 7.0 × 10¹4 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 4.1 × 10-¹1 s. (a) How many wavelengths are there in one pulse? (b) The light enters a pool of water. The frequency of the light remains the same, but the speed of the light slows down to 2.3 x 108 m/s. How many wavelengths are there now in one pulse?
A certain type of laser emits light that has a frequency of 7.0 × 10¹4 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 4.1 × 10-¹1 s. (a) How many wavelengths are there in one pulse? (b) The light enters a pool of water. The frequency of the light remains the same, but the speed of the light slows down to 2.3 x 108 m/s. How many wavelengths are there now in one pulse?
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter39: Relativity
Section: Chapter Questions
Problem 59PQ
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Step 1: Determine the given variables
VIEWStep 2: Calculate the wavelength of the emitted light
VIEWStep 3: Calculate the distance traveled by the light
VIEWStep 4: Calculate the number of wavelengths
VIEWStep 5: Calculate the wavelength of the light that enters a pool
VIEWStep 6: Calculate the distance traveled by the light in the pool
VIEWStep 7: Calculate the number of wavelength in one pulse
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