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 wav

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 wav
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

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 wav
(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

372.3分之一。

第一个问题，用光速/波长可得答案。光速近似取300000000m/s
1）8.058
2）4.153
第二个问题，公式给除了，直接带入计算。
1.923
第三个问题，新波长=新波速/频率
1）238.6
2）436.0

频率为c/L，其中c是光速，取300000000m/s，L就是波长，所以：
对于372.3 nm ，频率是8.058×10^14Hz
对于722.3nm，就是4.153×10^14Hz
玻璃中的光速等于c/n，n是玻璃的折射率，所以n=1.56时，玻璃中的光速是v=1.923×10^8m/s
既然光的频率不变，进入玻璃后变的就是波长，这时波长为原波长L的1/n

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频率为c/L，其中c是光速，取300000000m/s，L就是波长，所以：
对于372.3 nm ，频率是8.058×10^14Hz
对于722.3nm，就是4.153×10^14Hz
玻璃中的光速等于c/n，n是玻璃的折射率，所以n=1.56时，玻璃中的光速是v=1.923×10^8m/s
既然光的频率不变，进入玻璃后变的就是波长，这时波长为原波长L的1/n
对于372.3nm，变为372.3÷1.56=238.7nm
对于722.3nm，变为722.3÷1.56=463.0nm

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（a）Frequency=c(光速)/wavelength
so,For wave with wavelength of 372.3 nm ,Frequency = 8.06乘10^14 Hz
For wave with wavelength of 722.3 nm， Frequency = 4.15 乘 10^14 Hz
（b）v=c/n=1.92乘 10^8 m...

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（a）Frequency=c(光速)/wavelength
so,For wave with wavelength of 372.3 nm ,Frequency = 8.06乘10^14 Hz
For wave with wavelength of 722.3 nm， Frequency = 4.15 乘 10^14 Hz
（b）v=c/n=1.92乘 10^8 m/s
(c) New wavelength = v/ Frequency
For wave with original wavelength of 372.3 nm ,New wavelength = 238.2 nm
For wave with original wavelength of 722.3 nm ,New wavelength = 462.65 nm
旺采纳！

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(a) What are the frequencies assosiated with these two wavelengths?
For wave with wavelength of 372.3 nm
频率=光速/波长=3*10^8m/s / 372.3 nm =8.06*10^14赫兹
所以答案是：Frequency = 8.06 乘10^14...

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(a) What are the frequencies assosiated with these two wavelengths?
For wave with wavelength of 372.3 nm
频率=光速/波长=3*10^8m/s / 372.3 nm =8.06*10^14赫兹
所以答案是：Frequency = 8.06 乘10^14 Hz
For wave with wavelength of 722.3 nm
频率=光速/波长=3*10^8m/s / 722.3 nm =4.15*10^14赫兹
所以答案是：Frequency = 4.15 乘10^14 Hz
(b)Answer = 多少 乘 10^8 m/s
光速v=c/n=3*10^8m/s / 1.56= 1.92 乘 10^8 m/s
所以答案是：Answer = 1.92 乘 10^8 m/s
(c) New wavelength = 多少 nm
新波长=V / f 1 = 1.92 乘 10^8 m/s /8.06*10^14Hz = 2.38 乘 10^-7 m =238 nm
最后一问，另一个光波的新波长同理：
新波长=V / f 2 = 1.92 乘 10^8 m/s /4.15*10^14Hz = 4.63乘 10^-7 m =463 nm

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a. 可见光波长从372.3 nm~722.3 nm，这两个波长的频率？
对于波长372.3 nm
频率=光速/波长=3*10^8/372.3*10^-9=8.06*10^14 Hz
对于波长722.3 nm
频率=光速/波长=3*10^8/722.3*10^-9=4.15*10^14 Hz
b. 如果光通过玻璃速度减小，v=c/n，n是折射率，n=1.56...

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a. 可见光波长从372.3 nm~722.3 nm，这两个波长的频率？
对于波长372.3 nm
频率=光速/波长=3*10^8/372.3*10^-9=8.06*10^14 Hz
对于波长722.3 nm
频率=光速/波长=3*10^8/722.3*10^-9=4.15*10^14 Hz
b. 如果光通过玻璃速度减小，v=c/n，n是折射率，n=1.56，玻璃中的光速？
v=c/n=3*10^8/1.56=1.92*10^8 m/s
c. 如果光射入玻璃后频率不会改变，则为了减小速度波长必须改变，这两种波长的光在玻璃中的新的波长？
对于波长372.3 nm
新波长=速度/频率=1.92*10^8/8.06*10^14=238 nm
对于波长722.3 nm
新波长=速度/频率=1.92*10^8/4.15*10^14=463 nm

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