# What is the wavelength of 550 nm?

## What is the wavelength of 550 nm?

Light is an electromagnetic wave. Visible light has wavelengths from about 400 nm (400 x 10-9 m) for violet light through about 700 nm (700 x 10-9 m) for red light. Our eyes are most sensitive to light in the middle of this range, such as yellow light with a wavelength of about 550 nm (550 x 10-9 m).

What is energy of a photon of light with wavelength 500 nm?

The energy of a 500 nm photon is 4 x 10^-19 J.

### How many photons are emitted by a 100 watt sodium lamp 550 nm in one second 1 watt 1 J’s use 3 sig figs assume the lamp is 100% efficient in converting electrical energy into light?

The energy of each photon is E=hf=hc/λ. Only 3% of the 100 W power is emitted as light, or 3 W= 3 J/s. The number of photons emitted per second equals the light output of 3 J per second divided by the energy of each photon. per second , or almost 1019 photons emitted per second , an enormous number.

What is the wavelength of light?

The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view. More simply, this range of wavelengths is called visible light. Typically, the human eye can detect wavelengths from 380 to 700 nanometers.

## What is the wavelength of red light in NM?

around 620 to 750 nm
Red light has longer waves, with wavelengths around 620 to 750 nm.

What color is a wavelength of 600 nm?

Spectral colors

Color Wavelength Frequency
Cyan 485–500 nm 600–620 THz
Green 500–565 nm 530–600 THz
Yellow 565–590 nm 510–530 THz
Orange 590–625 nm 480–510 THz

### How much energy is in light with a wavelength of 425 nm?

Question: Part A Electromagnetic radiation with a wavelength of 425 nm appears as violet light to the human eye. The energy of one photon of this light is 4.68 x 10-19 J.

How many photons does a 60 watt bulb?

so, #photons= 60/3.2EXP(-19)=1.87EXP20 photons per second.

27/01/2020