Question

In: Chemistry

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

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

Solutions

Expert Solution

To calculate the number of photons in the given laser pulse we first calculate the energy associated with one photon.

Energy of one photon can be calculated using the Plank Einstein relation,

where E is the energy of one photon, h is the planks constant (6.626 10-34 Js), c is the speed of light (3108 m/s) and is the given wavelength

= 529 nm = 529 10-9 m [1 nm= 10-9 m]

Number of photons produced in the laser pulse = Energy of the laser pulse / Energy of one photon

                                                                          


Related Solutions

how many photons are produced in a laser pulse of 0.558 J at 431 nm?
how many photons are produced in a laser pulse of 0.558 J at 431 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 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?
A slit 0.100 cm wide is illuminated by light of wavelength 529. nm creating a diffraction...
A slit 0.100 cm wide is illuminated by light of wavelength 529. nm creating a diffraction pattern on a screen 284. cm away. How many millimeters are between the first 4 diffraction minima on the same side of the central diffraction maximum?
(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?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT