What is the stopping voltage for electrons freed from a metal with a work function of...
What is the stopping voltage for electrons freed from a metal with a work function of 4 electron volts by photons with a frequency of 5 x 1015 Hz?
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What is the stopping voltage for electrons freed from a metal
with a work function of...
Q1. The diagram shows the graphs of the stopping potential as a function of the frequency...
Q1. The diagram shows the graphs of the stopping potential as a function of the frequency of the incident light for photoelectric experiments performed on three different materials. Rank the materials according to the values of their work functions, from least to greatest 3 stop A. 123 B. 321 C. 213 D. 312 E. 132 Q2. The work function of a metal is 1.8 eV. The stopping potential for electrons ejected from a sample by light of frequency 5x10"Hz is?...
hf = + (1/2) mv2 and hf = + eVs work fucntion...
hf = + (1/2) mv2 and hf = + eVs work fucntion e = 1.60 x 10-19 C, h = 6.63 x 10-34 J s, m- mass of electron = 9.11 x 10-31 kg 1. The work function for lithium is 4.6 x 10-19 J. (a) Calculate the lowest frequency of light that will cause photoelectric emission. (b) What is the maximum energy of the electrons emitted when a light of 7.3 x 1014 Hz is...
***Please help fill in the table finding KE...& the following questions Metal Wavelength (nm) Frequency (Hz)...
***Please help fill in the table finding KE...& the
following questions
Metal Wavelength (nm) Frequency (Hz) f Stopping Voltage (V) KE (J) Sodium 125 2.4*1015 -7.58 Sodium 300 1.0*1015 -1.79 Sodium 450 6.7*1014 -0.45 Sodium 538 5.57 1014 -0.01 Sodium 540 5.55*1014 0 a. Describe what happens to the stopping voltage for wavelengths greater than or equal to 540 nm. Based upon your knowledge of the atom, hypothesize an explanation for such behavior. b. At 540nm no electrons are ejected....
Question 7 1 pts When light of wavelength , illuminates the surface of Metal 1, the...
Question 7 1 pts When light of wavelength , illuminates the surface of Metal 1, the stopping voltage is V. In terms of V, what will be the stopping voltage if the same wavelength is used to illuminate the surface of Metal 2? The work function of Metal 1 is 5.7 eV and the work function of Metal 2 is 2.1 eV. 3.6 volts - V O V-3.6 volts OV+3.6 volts 2.1 volts - V 5.7 volts - V Consider...
Light with a frequency of 4.43 × 1015 Hz strikes a metal surface and ejects electrons...
Light with a frequency of 4.43 × 1015 Hz strikes a metal surface and ejects electrons that have a maximum kinetic energy of 6.5 eV. What is the work function of the metal?
Which of the following statements is correct for photoelectric effect? (A) In order to eject electrons...
Which of the following statements is correct for photoelectric effect? (A) In order to eject electrons from a metal surface, the wavelength of photon must be shorter than the threshold wavelength. (B) In order to eject electrons from a metal surface, the frequency of photon must be lower than the cut-off frequency. (C) The work function increases with increasing the frequency of photons. (D) The work function increases with increasing the wavelength of photons. (E) The kinetic energy of ejected...
Help! Consider photons of wavelength λ W= 1.75eV: 4. 261 nm incident onto a metal with...
Help!
Consider photons of wavelength λ W= 1.75eV: 4. 261 nm incident onto a metal with work function a. What is the frequency of this incident light? (1pt) b. What is the encrgy of a photon of this light? (Ipt) What will the kinetic energy be for an electron emitted from the metal? (2pt) c. d. What would the stopping voltage be for this set up? (2pt)
When 289-nm photons are incident on the surface of a metal, electrons are ejected from it...
When 289-nm photons are incident on the surface of a metal, electrons are ejected from it and the stopping potential is 2.69 V. Find the energy of incident photons: E,= (4.287 eV. Find the kinetic energy of ejected electrons: K= eV. Find the work function of the metal: p= 1.597 ✓ev. Find the wavelength of the least energetic photon that can induce the photo- electric effect in this metal 2 = 778 nm.
Light striking a metal surface causes electrons to be emitted from the metal via the photoelectric...
Light striking a metal surface causes electrons to be emitted from the metal via the photoelectric effect.In a particular experiment to study the photoelectric effect, the frequency of the incident light and the temperature of the metal are held constant. Assuming that the light incident on the metal surface causes electrons to be ejected from the metal, what happens if the intensity of the incident light is increased?Check all that apply.The work function of the metal decreases.The number of electrons...
1. Calculate the Work Function of a metal that has a threshold frequency of 9.54 x...
1. Calculate the Work Function of a metal that has a threshold frequency of 9.54 x 1014 s-1. answer: 63.3*10^(-20)J 2. What is the wavelength of this light in nm? answer: 314nm 3. What would be the Kinetic Energy of an ejected photoelectron if 3.26 x 1015 s-1 light struck (hit) that same metal? answer: 1.53*10^(-18)J 4. What would be the velocity and De Broglie Wavelength of ejected photoelectron? answer: 1.83*10^(6)m/s 5.What is the wavelength of light (in nm) of...
Q1. The diagram shows the graphs of the stopping potential as a function of the frequency of the incident light for photoelectric experiments performed on three different materials. Rank the materials according to the values of their work functions, from least to greatest 3 stop A. 123 B. 321 C. 213 D. 312 E. 132 Q2. The work function of a metal is 1.8 eV. The stopping potential for electrons ejected from a sample by light of frequency 5x10"Hz is?...
***Please help fill in the table finding KE...& the
following questions
Metal Wavelength (nm) Frequency (Hz) f Stopping Voltage (V) KE (J) Sodium 125 2.4*1015 -7.58 Sodium 300 1.0*1015 -1.79 Sodium 450 6.7*1014 -0.45 Sodium 538 5.57 1014 -0.01 Sodium 540 5.55*1014 0 a. Describe what happens to the stopping voltage for wavelengths greater than or equal to 540 nm. Based upon your knowledge of the atom, hypothesize an explanation for such behavior. b. At 540nm no electrons are ejected....
Question 7 1 pts When light of wavelength , illuminates the surface of Metal 1, the stopping voltage is V. In terms of V, what will be the stopping voltage if the same wavelength is used to illuminate the surface of Metal 2? The work function of Metal 1 is 5.7 eV and the work function of Metal 2 is 2.1 eV. 3.6 volts - V O V-3.6 volts OV+3.6 volts 2.1 volts - V 5.7 volts - V Consider...
Help!
Consider photons of wavelength λ W= 1.75eV: 4. 261 nm incident onto a metal with work function a. What is the frequency of this incident light? (1pt) b. What is the encrgy of a photon of this light? (Ipt) What will the kinetic energy be for an electron emitted from the metal? (2pt) c. d. What would the stopping voltage be for this set up? (2pt)
When 289-nm photons are incident on the surface of a metal, electrons are ejected from it and the stopping potential is 2.69 V. Find the energy of incident photons: E,= (4.287 eV. Find the kinetic energy of ejected electrons: K= eV. Find the work function of the metal: p= 1.597 ✓ev. Find the wavelength of the least energetic photon that can induce the photo- electric effect in this metal 2 = 778 nm.
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