A circuit employs a silicon solar cell to detect flashes of light lasting 0.25 ss. The smallest current the circuit can detect reliably is 0.33 μA Assuming that all photons reaching the solar cell give their energy to a charge carrier, what is the minimum power of a flash of light of wavelength 590 nmnm that can be detected?   P=

Q: When a metal is illuminated with light of wavelength 420 nm, the stopping potential is 0.65 V; when…

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Q: Photoelectrons with a maximum kinetic energy of 7.95 eV are emitted from a metal when it is…

A: The kinetic energy of the electron is given in electron volts (eV). However, in order to calculate…

Q: If a particle weighs 7.61 kg and has a de Broglie wavelength of 2.06 x 10-39 m , what is its current…

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Q: An X-ray photon is produced by braking, losing kinetic energy when braking. Find the initial kinetic…

A: Required : Minimum wavelength of the x-ray.

Q: Assume we have a material with a work function of 4.94 eV. What is the maximum speed, in meters per…

A: Given Work function of the material is ϕ=4.94 eV=4.94×1.6×10-16 J=7.90×10-19 J Wavelength of the…

Q: 3.2 Light with a wavelength of 2.00×10-7 m is directed at a metallic surface made of yttrium, which…

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Q: a) Calculate the number of photoelectrons per second ejected from a 0.75-mm² area of sodium metal by…

A: a) The required number of photo-electrons is, n=PE   =IAhcλ    =IAλhc…

Q: ▼ In a photoelectric-effect experiment, the stopping potential is 1.37 V if the light used to…

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Q: What is the momentum of a 0.0055 -nm wavelength photon that could detect details of an atom? -120…

A: Momentum P = 12.05 × 10-23 kg.m/s

Q: What must be the velocity, in meters per second, of a beam of electrons if they are to display a de…

A: Wavelength, λ = 29.1 μmVelocity, v = ?

Q: Light of frequency 1.4 × 1015 Hz illuminates a piece of lithium, and the lithium emits…

A: SOlution: Givent that f = 1.4x1015 Hz KE =3.7 eV

Q: The de Broglie wavelength of an electron has to do with spatial resolution of an electron…

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Q: Calculate the velocity (in m/s) of an electron that has a wavelength of 8.76 µm.  m/s (b) Through…

A: given, the wavelength of electron=λ=8.76 um mass of electron=m=9.1x10-31kg According to de Broglie…

Q: A ball has a mass of 0.22 kg just before it strikes the Earth after being dropped from a building…

A: Mass = 0.22kg Distance covered (s) = 42.9 m

Q: In a photoelectric experiment using a Potasium surface, you find a stopping potential of 0.57 V for…

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Q: light beam of wavelength 460 nm and intensity 180 W/m^2 shines on a target of area 1.69 m^2 for a…

A: We have givenThe wavelength is 460 nmintensity is 180 W/m2Area is1.69 m2duration is 4.25 sWe have to…

Q: What is the wavelength (in meters) of a 0.5 kg particle moving with a velocity of 6.63x10-34 m/s?…

A: Given data:  Mass (m) = 0.5 kg Velocity (v) = 6.63×10-34 m/s h = 6.63×10-34 J.s Required: Wavelength…

Q: Q1: An electron in a resting state causes a photon to deviate from its path by an angle of 120…

A: Compton Scattering is the deviation of a photon after it collides with a charged particle. when…

Q: What is the frequency of a 9 x 1025 joule photon?

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Q: A 245 W bulb produces monochromatic U-V light of frequency 1.34x1015 Hz. If the efficiency of the…

A: Power = 245 efficiency = 24% Thus , effective power = 0.24 * 245 = 58.8 W

Q: During an experiment 8.8x1014 Hz light shines on a metal plate and the Photoelectric Effect occurs.…

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Q: Light of frequency 3.3 × 1015 Hz illuminates a piece of silver, and the silver emits photoelectrons…

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Q: 1.2. When a photoelectric cell with a copper cathode is illuminated by a Hg arc lamp, with…

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Q: ball has a mass of 0.121 kg just before it strikes the Earth after being dropped from a building…

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Q: A laser emits light at wavelength A = 598 nm in a beam of diameter 3.7 mm and at an energy-emission…

A: Given  Wavelength λ = 598 nm = 5.98×10-7 m Diameter d = 3.7mm = 3.7×10-3 m Energy-emission rate P =…

Q: Light of frequency 1.6 × 1015 Hz illuminates a piece of iron, and the iron emits photoelectrons with…

A: Given that, frequency of light exposed, f= 1. 6× 10¹⁵ Hz Maximum kinetic energy, K.E= 2.7 ev KE=…