Rapid Fire Problems A beam of light (f = 5.0 times 10^14 Hz) enters a piece of g
ID: 1605999 • Letter: R
Question
Rapid Fire Problems
A beam of light (f = 5.0 times 10^14 Hz) enters a piece of glass (n = 1.5). What is the frequency of the light while it is in the glass? Light has a wavelength of 600 nm in a vacuum. It passes into glass, which has an index of refraction of 1.50. What is the wavelength of the light in the glass? Light has wavelength 600 nm in a vacuum. It passes into glass, which has an index of refraction of 1.50. What is the frequency of the light inside the glass? Light has a wavelength of 600 nm in a vacuum. It passes into glass, which has an index of refraction of 1.50. What is the speed of the light in the glass? Light of wavelength 550 nm in vacuum is found to travel at 1.96 times 10^8 m in a certain liquid. Determine the index of refraction of the liquid. Light of wavelength 550 nm in air is found to travel at 1.96 times 10^8m in a certain liquid. Determine the frequency of the light in the liquid. Light of wavelength 550 nm in air is found to travel at 1.96 times 10^8m in a certain liquid. Determine the wavelength of the light in the liquid.Explanation / Answer
1)
frequency remains same in any medium
frequency f = 5*10^14 Hz <<<<<======ANSWER
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2)
wavelength in medium = wavelength in vacuum/n
wavelength in medium = 600nm/1.5 = 400 nm <<<---answer
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3)
frequency f = c/lambda = 3*10^8/(600*10^-9) = 5*10^14 Hz <<<<<======ANSWER
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4)
speed in medium = c/n = 3*10^8/1.5 = 2*10^8 m/s <<<<======ANsWER
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5)
refractive index n = speed of light in vacuum/speed of light in medium
n = c/v
v = 3*10^8/(1.96*10^8) = 1.53 <<<<======ANsWER
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(6)frequency f = c/lambda in vacuum = 3*10^8/(550*10^-9) = 5.45810^14 Hz <<<<<======ANSWER
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(7)
wavelength in medium = wave length in vacuum/n
wavelength in medium = 550 nm/1.53 = 349.4 nm <<<<<======ANSWER
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