8) The photoelectric work function of a metal is the minimum energy needed to eject an...

8) The photoelectric work function of a metal is the minimum energy needed to eject an electron by irradiating the metal with light. For calcium, this work function equals 4.34 x 10-19 J. What is the minimum frequency of light required to observe the photoelectric effect in calcium?

9) Light of wavelength 345 nm shines on a piece of calcium metal. What is the speed of the ejected electron? (Light energy greater than that of the work function of calcium or any metal ends up as the kinetic energy of the electron ejected…)

please give me a full explaination and formula

Expert Solution

queen_honey_blossom answered 2 years ago

A). The minimum frequency of light needed to eject electrons from a metal is called the...

A). The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 4.90 x 10^14 s^-1. B). With what maximum kinetic energy will electrons be ejected when this metal is exposed to light with a wavelength of y= 275 nm?

1)The minimum frequency of light needed to eject electrons from a metal is called the threshold...

1)The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 4.55 × 1014 s–1. 2)With what maximum kinetic energy will electrons be ejected when this metal is exposed to light with a wavelength of λ = 265 nm?

Ionization energy is the energy needed to eject an electron from an atom or ion. Calculate...

Ionization energy is the energy needed to eject an electron from an atom or ion. Calculate the ionization energy, IE, of the one-electron ion Be3 . The electron starts in the lowest energy level, n=1.

1) Calculate the maximum wavelength of radiation (corresponding to the minimum energy) necessary to eject a...

1) Calculate the maximum wavelength of radiation (corresponding to the minimum energy) necessary to eject a 1s electron from a 27Al atom (which has a 1s1s binding energy of 1559.6 eVeV).

Explain the photoelectric effect in terms of energy. In your explanation, start with the energy of...

Explain the photoelectric effect in terms of energy. In your explanation, start with the energy of the incident EMR photons and finish with the energy of the stopping voltage. Be sure to include the following terms in your answer: threshold frequency, light intensity, photoelectron current, work function, photoelectron kinetic energy and stopping voltage.

Explain the photoelectric effect. Explain the work function and the threshold frequency. How do you obtain...

Explain the photoelectric effect. Explain the work function and the threshold frequency. How do you obtain maximum kinetic energy of the ejected electron?

Titanium metal requires a photon with a minimum energy of 6 .9 4 * 1 0...

Titanium metal requires a photon with a minimum energy of 6 .9 4 * 1 0 - 1 9 J to emit electrons. ( a ) What is the minimum frequency of light necessary to emit electrons from titanium via the photoelectric effect? ( b ) What is the wavelength of this light? ( c ) Is it possible to eject electrons from titanium metal using visible light? ( d ) If titanium is irradiated with light of wavelength 233...

The work function of a metal is 3.0eV. What is the maximum wavelength of the incident...

The work function of a metal is 3.0eV. What is the maximum wavelength of the incident light to obtain photoelectric electrons from this metal? 663nm 1240nm 414nm 138nm

a) In a photoelectric cell, the minimum voltage required to reduce the current to zero is...

a) In a photoelectric cell, the minimum voltage required to reduce the current to zero is 3.0 V. What is the maximum kinetic energy of the electrons ejected from this cell? (format of a.b x 10-cd J ) b) A photon of frequency 7.2 x 1015 hz is incident upon a metal whose threshold frequency is 8.9 x 1014 Hz, What is the speed of the photoelectron? (format of a.b x 10c m/s) c) Light with a wavelength of 425...

The Photoelectric Effect Lab 10 Prelab Questions : Predictions If the light shining on the metal...

The Photoelectric Effect Lab 10 Prelab Questions : Predictions If the light shining on the metal becomes brighter, will the kinetic energy of the emitted electrons increase? If the light shining on the metal becomes brighter, will the number of electrons being emitted per second (the photo-current) increase? If the frequency of the light shining on the metal is increased, will the number of electrons being emitted per second (the photo-current) increase? If the frequency of the light shining on...

Question