# 10 how many photons are contained in a flash of green light Ideas Contents

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# How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy? | ProtonsTalk

Home Forums Physics How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy?

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• July 19, 2021 at 9:00 am
#9785

a) 5.67 x 10^23 photons
b) 2.01 x 10^24 photons
c) 4.99 x 10^23 photons
d) 1.25 x 10^31 photons

July 19, 2021 at 9:12 am
#9786 The correct answer is c) 4.99 x 10^23 photons

Explanation:

The energy of a photon is given as E = hf

where,
h = Planck’s constant = 6.626×10^-34 Js
f = frequency = c/x
c = speed of light = 3×10^8 m/s
x = wavelength = 525 nm = 525×10^-9 m

E = hc/x
=> E = 6.626×10^-34 × 3×10^8 / (525×10^-9)
=> E = 3.79×10^-19 J/Photon
=> E = 3.79×10^-22 kJ/Photon

And, 189 kJ/3.79×10^-22 kJ/photon = 4.99×10^23 photons.

So the number of photons is 4.99×10^23 photons.

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• Sumary: a) 5.67 x 10^23 photons b) 2.01 x 10^24 photons c) 4.99 x 10^23 photons d) 1.25 x 10^31 photons

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• Intro: How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy? | ProtonsTalk Home › Forums › Physics › How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy? Viewing 2 posts -…

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• Sumary: How many photons are contained in a flash of green light (525 nm) that contains 189 kj of energy? Answer 4.99e23 photons. Solved for blue, orange, yellow

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• Sumary: VIDEO ANSWER: In this question it says that how many photons are contained in a flash of green lights of wave length- 525 kilometers that contains 189 joule of…

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• Intro: SOLVED: Question 3 (2 points) How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy? Reference Material 04.99 X 1023 photons 01.25 X 1031 photons 07.99 X 1030 photons 05.67 X 1023 photons Video Answer: Solved by verified expert Get the…

## Frequently Asked Questions About how many photons are contained in a flash of green light

If you have questions that need to be answered about the topic how many photons are contained in a flash of green light, then this section may help you solve it.

### What exactly is a green light photon?

Green light photons have an energy of 3.8 10? 19 J, where E is energy, h is Planck’s constant, and f is wave frequency.

### How many photons are present in a 525 nm flash of green light that has an energy content of 189 kJ?

Additionally, the number of photons is 4.991023 photons because 189 kJ/3.7910-22 kJ/photon.

### What number of photons are present in a flash of light?

The number of the photon is 1.82501024 1.8250 10 24 when the known values are substituted for the value of the speed of light, which is 3108m/s 3 10 8 m/s.

### What is the photon count of blue light?

The team calculated the number of photons (visible light particles) that stars have released over the course of the observable universe to be b>41084/b> photons.

### How many Hertz is the color green?

A green light has a frequency of 6 1014 Hz.

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### In 525 nm, how many photons are there?

=4..99e23 photons

### What is the energy of a green photon with a 543 nm wavelength?

The energy of green light, which corresponds to choice c, is 3.66 x 10?19Js?19Js.

### In a lightbulb, how many photons are there?

Therefore, the lightbulb needs to produce 1.8 x 1020 photons per second—or 180,000,000,000,000,000,000 photons per second—in order to emit 60 Joules per second.

### How are light photons calculated?

Thanks to the formula E = hc/?, where h is Planck’s constant, c is the speed of light, and? is the photon wavelength, finding the individual photon energy is actually as easy as finding its wavelength.

### Which hue contains the most photons?

Violet light has the highest energy because it has the highest frequency.

### which photon has the most energy?

The highest energy photons ever observed have been discovered by a team of Chinese and Japanese astronomers. These photons are gamma rays with energies up to 450 trillion electron volts (TeV).

### What light has the most energy per photon?

Violet light has the highest energy because it has the highest frequency.

### Can one photon be seen by the human eye?

The retina’s sensors can detect a single photon, making the human eye incredibly sensitive. However, neural filters won’t let a signal reach the brain to cause a conscious response until at least five to nine photons arrive within less than 100 ms.

### How much is a single photon worth?

One photon of visible light contains approximately 10-19 Joules (not much!) One photon of infrared light contains about 10-19 Joules (not much!)

### Do people only have 1% light vision?

Only a tiny fraction of the electromagnetic spectrum—about 0.0035 percent—is made up of the entire rainbow of radiation that can be seen with the human eye.

### Are photons necessary for vision?

A photon is a particle of light, and since human eyes are made to detect light, photons are the only particles that humans can directly see.

### Can a photon be seen by humans?

According to Scientific American, even a single photon can cause a flash of light that people can see.

### Are single photon shots possible?

The reason is that photons cannot be fired one by one at will at a target; there are no pea shooters for photons.