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Q: What is the frequency of red light if the wavelength is 750nm?
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What color of the visible light region has the longer wavelengths?

Red has the longest wavelength, up to 750nm.


How do the wavelength and frequency of red light compare to the wavelength and frequency of blue light?

very nice answer.


Which type of visible light has the longest wavelength?

The longest wavelength / lowest frequency visible light is the red end of the spectrum. The shortest wavelength / highest frequency visible light is the violet end of the spectrum.


Which light has the longest wavelength and the shortest frequency?

The longest visible wavelength of light appears red. "Longest wavelength" is equivalent to 'lowest frequency'.


What makes a red light appear red?

Its frequency (wavelength).


Why is red light having maximum wavelength?

Because red light has minimum frequency and thus it has maximum wavelength.


Between green light and red light which has a higher frequency?

Red light has a longer wavelength than blue light, (i.e. greater distance for one oscillation of red light compared to blue light) so there are less oscillations in the same period of time for red light, and thus red light has a lower frequency than blue light. More concisely: Wavelength = Wavespeed / Frequency , where wavespeed is constant So Frequency = Wavespeed / Wavelength Therefore as wavelength increases, frequency decreases. Make sense? Jack


True or false visibe light with the shortest wavelength is red light?

No, red is the longest wavelength of visible light, with the lowest frequency and the least energy. Violet light has the shortest wavelenght, with the highest frequency and the most energy (of visible light).


How do the wavelength and frequency of an X-ray compare with those of the red light from a neon sign?

The wavelength of an X-ray is much shorter than the wavelength of a red light from a neon sign. The frequency is much longer in an X-ray than the frequency of a red light from a neon sign.


How would the wavelength and frequency of a red light compare to the wavelengths and frequencies of green and violet lights?

-- Red light has the lowest frequency of those three. -- Green light has lower frequency than violet light has. -- The wavelength of all light is inversely proportional to its frequency.


What makes a light appear red or green?

Its frequency (wavelength).


What is the frequency of infrared ray?

Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than that of visible light, but shorter than that of microwaves. Infrared radiation has wavelengths between about 750 nm and 1 mm. To convert wavelength to frequency, divide the speed of light by the wavelength. Speed of light is 300000000 m/s so 1mm corresponds to a frequency of 3E11 or 300GHz 750nm corresponds to a frequency of 4E14 or 400THz if I didn't drop a decimal point somewhere.