神马作文网200求一道物理题 懂英文的来
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200求一道物理题 懂英文的来
The visible spectrum of colors ranges from approximately 372.3 nm in wavelength at the violet end to 722.3 nm at the far red end.
(a) What are the frequencies assosiated with these two wavelengths?
For wave with wavelength of 372.3 nm
Frequency = 多少 乘10^14 Hz
For wave with wavelength of 722.3 nm
Frequency = 多少 乘 10^14 Hz
(b) When light passes through glass the speed of light is reduced to v = c/n where n is called the inedx of refraction.For many types of glass or plastic,n is approximately 1.56.
What is the approximate speed of light in glass?
Answer = 多少 乘 10^8 m/s
If the frequency of light does not change when light enters glass,the wavelength must change to account for the reduction in speed.
(c) What are the wavelengths for the two ends of the visible spectrum in glass?
For wave with original wavelength of 372.3 nm
New wavelength = 多少 nm
For wave with original wavelength of 722.3 nm
New wavelength = 多少 nm
nm是纳米单位哈
The visible spectrum of colors ranges from approximately 372.3 nm in wavelength at the violet end to 722.3 nm at the far red end.
(a) What are the frequencies assosiated with these two wavelengths?
For wave with wavelength of 372.3 nm
Frequency = 多少 乘10^14 Hz
For wave with wavelength of 722.3 nm
Frequency = 多少 乘 10^14 Hz
(b) When light passes through glass the speed of light is reduced to v = c/n where n is called the inedx of refraction.For many types of glass or plastic,n is approximately 1.56.
What is the approximate speed of light in glass?
Answer = 多少 乘 10^8 m/s
If the frequency of light does not change when light enters glass,the wavelength must change to account for the reduction in speed.
(c) What are the wavelengths for the two ends of the visible spectrum in glass?
For wave with original wavelength of 372.3 nm
New wavelength = 多少 nm
For wave with original wavelength of 722.3 nm
New wavelength = 多少 nm
nm是纳米单位哈
(a)
For wave with wavelength of 372.3 nm
Frequency = c/λ1=8.06×10^14 Hz
For wave with wavelength of 722.3 nm
Frequency =c/λ2=4.153×10^14 Hz
(b)
Answer :v = c/n =1.923× 10^8 m/s
(c)
For wave with original wavelength of 372.3 nm
New wavelength = λ1/n=238.65 nm
For wave with original wavelength of 722.3 nm
New wavelength =λ2/n=463.013 nm
For wave with wavelength of 372.3 nm
Frequency = c/λ1=8.06×10^14 Hz
For wave with wavelength of 722.3 nm
Frequency =c/λ2=4.153×10^14 Hz
(b)
Answer :v = c/n =1.923× 10^8 m/s
(c)
For wave with original wavelength of 372.3 nm
New wavelength = λ1/n=238.65 nm
For wave with original wavelength of 722.3 nm
New wavelength =λ2/n=463.013 nm