What is the wavelength of a green light laser with the frequency of 5.555 x 1014 Hz? [speed of light is c = 3 × 108 m/s] ○ 555 nm 570 nm O540 nm 495 nm 167 nm ○ 185 nm
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- A green laser beam with a wavelength l = 532 nm has an energy of 3.85 x 10–3 J per pulse. What is the energy per photon? (h = 6.63 x 10–34J.s; c = 3.00 x 108 m/s; 1 nm = 10–9 m) (A) 3.85 x 10–3 J (B) 3.74 x 10–37 J (C) 3.74 x 10–28 J (D) 3.74 x 10–19 JAn argon-ion laser produces a cylindrical beam of light whose average power is 0.725 W. How much energy is contained in a 2.88-m length of the beam?The photoelectric effect can be used in engineering designs for practical applications. For example, infrared goggles used in night-vision applications have materials that give an electrical signal with exposure to the relatively long wavelength of IR light. If the energy needed for signal generation is 7.5 x 10-20 J, what is the minimum wavelength? What is the frequency of light that can be detected? c = 2.998 x 10 m/s h = 6.626 x 10-34 J s m
- When light with a wavelength of 198 nm strikes the surface of tin metal. What is the photon energy from the wavelength? A 1.0 x 10-18 J в) 7.1 х 1019] c) 1.98 x 107 J D 1.2 x 10-18 JThe plot shows the dispersion curve of Indium phosphide (InP). What is the wavelength of an EM wave in InP if it has a speed of 9.23 × 10' m/s? 3.60 3.55 3.50 3.45 3.40 3.35 3.30 R 3.25 3.20 3.15 0 1 2 3 4 5 6 7 8 9 10 Wavelength (um) Ο Α. 1.45 μm ов. 2.80 дm ос. 4.50 рm O D. 9.50 µm Refractive indexJ33
- A lightbulb emits light with a power of 100 W at a wavelength of 550 nm. You view the lightbulb from a distance of 1 km. The diameter of the pupil of your eye is 2 mm. How much light energy enters your eye in 1 second? 4.5 x 10-11 J 2.5 x 10-11 J 4.0 x 10-11 J O 3.5 x 10¬11 J O 3.0 x 10-11 J 2.0 x 10-11 JWhen light with a wavelength of 198 nm strikes the surface of tin metal. What is the photon energy from the wavelength? A 1.2 x 10-18 J в) 7.1х 10:19] 1.98 x 10-7J 1.0 x 10-18 JThe photoelectric effect can be used in engineering designs for practical applications. For example, infrared goggles used in night-vision applications have materials that give an electrical signal with exposure to the relatively long wavelength of IR light. If the energy needed for signal generation is 6.4 x 10-20 J, what is the minimum wavelength? What is the frequency of light that can be detected? c = 2.998 x 10° m/s h = 6.626 x 10-34 J s s-1 Submit Answer Retry Entire Group No more group attempts remain
- Many varieties of lasers emit light in the form of pulses rather than a steady beam. A tellurium–sapphire laser can produce light at a wavelength of 800 nm in ultrashort pulses that last only 4.00 x 10-15 s (4.00 femtoseconds, or 4.00 fs). The energy in a single pulse produced by one such laser is 2.00 µJ = 2.00 x 10-6 J, and the pulses propagate in the positive x-direction. Find (a) the frequency of the light; (b) the energy and minimum energy uncertainty of a single photon in the pulse; (c) the minimum frequency uncertainty of the light in the pulse; (d) the spatial length of the pulse, in meters and as a multiple of the wavelength; (e) the momentum and minimum momentum uncertainty of a single photon in the pulse; and (f) the approximate number of photons in the pulse(a) How many minutes does it take a photon to travel from the Sun to the Earth? 8.32 It can be useful to remember that light travels from the Sun to Earth in about 8.32 minutes. min (b) What is the energy in eV of a photon with a wavelength of 628 nm? 1.98 eV (c) What is the wavelength (in m) of a photon with an energy of 1.13 eV? 1.76*10**-6Light with a wavelength of 571 nm is in the visible part of the electromagnetic spectrum. What is the numerical value of the exponent p if 571 nm = 571 x 10² cm? p= Report your numerical answer below, assuming three significant figures.