how many photons are produced in a laser pulse of 0.558 J at 431 nm?

Expert Solution

Energy of 1 photon =h*c/lambda

= (6.626*10^-34)*(3*10^8) / (431*106-9 )

= 4.612*10^-19 J

Total energy = 0.558 J

Number of photon = total energy /energy of 1 photon

=0.558 / (4.612*10^-19)

= 1.21*10^18 photons

Answer: 1.21*10^18 photons

queen_honey_blossom answered 2 years ago

How many photons are produced in a laser pulse of 0.616 J at 529 nm?

Be sure to answer all parts. How many photons at 586 nm must be absorbed to...

Be sure to answer all parts. How many photons at 586 nm must be absorbed to melt 4.65 ×102 g of ice? (It takes 334 J to melt 1 g of ice at 0°C.) (Enter your answer in scientific notation.) On average, how many H2O molecules does one photon convert from ice to water? (Enter your answer in scientific notation.)

1. How many photons at 586 nm must be absorbed to melt 6.55 × 102 g...

1. How many photons at 586 nm must be absorbed to melt 6.55 × 102 g of ice? (It takes 334 J to melt 1 g of ice at 0° C. On average, how many H2O molecules does one photon convert from ice to water? 2. The highest speed limit in the United States is 85.0 mph on an isolated stretch of rural interstate in Texas. What is the speed limit in kilometers per hour? (1 mi = 1609 m)....

A powerful 0.54-W laser emitting 670-nm photons shines on a black sail of a tiny 0.10-g...

A powerful 0.54-W laser emitting 670-nm photons shines on a black sail of a tiny 0.10-g cart that can coast on a frictionless track. Part A Determine the force of the light on the sail. Assume that the light is totally absorbed by the sail. Express your answer to two significant figures and include the appropriate units. F = 7.01•106N SubmitMy AnswersGive Up Incorrect; Try Again; 5 attempts remaining Part B What time interval is needed for the cart's speed...

A 650-nm continuous-wave laser beam strikes a photodetector. The photon arrival rate is 4x10^16 photons per...

A 650-nm continuous-wave laser beam strikes a photodetector. The photon arrival rate is 4x10^16 photons per second, resulting in 6x10^16 electrons per second being collected at the photodetector's positive contact (i.e.,anode). 1. What is the average received optical power in mW? 2. What is the average photocurrent in the external circuit? 3. What is the quantum efficiency of the photodetector? 4. What is the responsivity? 5. Does this photodetector exhibit photocurrent gain?

A laser produces 22.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photons....

A laser produces 22.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photons. What is the wavelength of the laser?

(8%) Problem 7: Consider a laser with a wavelength of 690 nm. If this laser passes...

(8%) Problem 7: Consider a laser with a wavelength of 690 nm. If this laser passes through a diffraction grating having N = 4680 lines/cm. A diffraction pattern will be observed on a screen R = 1.39 m away from the grating. Do not assume the angles are small. 33% Part (a) At what angle from the central maximum will the first maximum be observed? Give your answer in degrees. 33% Part (b) What is the distance on the screen...

What is the energy per mole of photons of light with a wavelength of 812.4 nm?...

What is the energy per mole of photons of light with a wavelength of 812.4 nm? a.) 2.45 x 10^-19 KJ/mol b.) 1.47 x 10^2 KJ/mol c.)4.89 x 10^14 KJ/mol d.) 2.22 x 10^35 KJ/mol e.) 3.69 x10^14 KJ/mol (please show work)

Photons with a wavelength of 599 nm in air enter a plate of flint glass with...

Photons with a wavelength of 599 nm in air enter a plate of flint glass with index of refraction n = 1.66. Find the speed, wavelength, and energy of a photon in the glass. (a) speed (in m/s) m/s (b) wavelength (in m) m (c) energy (in J)

A laser emits two wavelengths (λ1 = 420 nm; λ2 = 630 nm). When these two...

A laser emits two wavelengths (λ1 = 420 nm; λ2 = 630 nm). When these two wavelengths strike a grating with 450 lines/mm, they produce maxima (in different orders) that coincide. What is the order (m) of each of the two overlapping lines? At what angle does this overlap occur?

Question