2016年3月9日 · The shorter the wavelength, the more harmful the UV radiation. However, shorter wavelength UV radiation is less able to penetrate the skin. The UV region covers the wavelength range 100-400 nm and is divided into three bands: UVA (315-400 nm) UVB (280-315 nm) UVC (100-280 nm). Short-wavelength UVC is the most damaging type of UV radiation.

2024年7月29日 · Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light. UV radiation comes naturally from the sun, but it can also be created by artificial sources used in industry, commerce and recreation.

Q: Calculate the wavelength of yellow light in nanometers if the light has a frequency of 4.14 x 1014… A: Given information: frequency = 4.14 x 1014 s-1 Q: Which of the following wavelengths has the lowest frequency? 470 nm 440 nm all wavelengths have the…

When ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the maximum kinetic energy of the emitted electrons is measured to be 1.10 eV. What is the maximum kinetic energy of the electrons in Joules when light of …

Take into account significant figures of the wavelength value. 2.998 x 10° m/s 3.00 x 10 s/m 2.998 x 10° s/m 3.00 x 10° m/s Attempts: 4 of 15 used Part 3 Using the knowledge established in the previous parts, answer the original question: Ultraviolet light with a wavelength longer than about 295 nm has little germicidal value.

When ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.10 eV. (a) What is the work function of the metal surface? (b) What is the maximum kinetic energy of the photoelectrons when light of wavelength 300.0 nm falls on the same surface?

A photon of light produced by a surgical laser has an energy of 3.027 × 10−19 J. Calculate the frequency and wavelength of the photon. What is the total energy in 1 mole of photons? What is the color of the emitted light?

A: Speed of light, C = 3 × 108 m/s Wavelength of light (λ) = 589nm Wavelength of light (λ) = 589×10-9… Q: What is the wavelength, in nanometers, of light with a frequency of 1.24×1015 Hz? A: We Know that speed of light wave is related to the frequency and wavelength of light.

When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.10 eV. Part A What is the maximum kinetic energy of the photoelectrons when light of wavelength 290 nm falls on the same surface? Express your answer in electronvolts.