Electrons are ejected from a metallic surface with speeds ranging up to 4.4 105 m/s when...

Question

Question

Electrons are ejected from a metallic surface with speeds ranging up to 4.4 105 m/s when light with a wavelength of λ = 630 nm is used.

(a) What is the work function of the surface? ______eV

(b) What is the cutoff frequency for this surface? _________Hz

science physics

Answer 1

Answer #1

+1 mev レ -31 x lo 0 12.ev uf 6.63 x1o-31

Answer 2

Similar Homework Help Questions

Electrons are ejected from a metallic surface with speeds ranging up to 3.90x10^5 m/s when light...

Electrons are ejected from a metallic surface with speeds ranging up to 3.90x10^5 m/s when light with a wavelength of λ= 705 nm is used. 1.Find the work function of the surface in units of eV. (A) 1.33 (B) 2.67 (C) 3.86 (D) 4.38 (E) 5.38 2.Find the cutoff frequency for this surface (in units of 10^14 Hz). (A) 1.33 (B) 2.67 (C) 3.21 (D) 4.38 (E) 5.38
1. Electrons are ejected from a metal surface with energies ranging up to 0.5 eV when...

1. Electrons are ejected from a metal surface with energies ranging up to 0.5 eV when light with a wavelength of 538 nm is used. What is the work function of the metal in units of eV? 2. What is the deBroglie wavelength (in nm) of a neutron (m = 1.67*10-27 kg) moving with a speed of 68 m/s? Enter a number with 2 decimal places. 3. A gamma ray photon has an energy of 0.84 GeV. (1 GeV =...
Ultraviolet light having a wavelength of 113 nm strikes a metallic surface. Electrons leave the surface...

Ultraviolet light having a wavelength of 113 nm strikes a metallic surface. Electrons leave the surface with speeds up to 3.06 × 105 m/s. What is the work function, in eV of the metal?

Ultraviolet light having a wavelength of 146 nm strikes a metallic surface. Electrons leave the surface...

Ultraviolet light having a wavelength of 146 nm strikes a metallic surface. Electrons leave the surface with speeds up to 3.15 × 105 m/s. What is the work function, in eV of the metal?
Electromagnetic radiation is incident on a metallic surface. Electrons are emitted from the surface when the...

Electromagnetic radiation is incident on a metallic surface. Electrons are emitted from the surface when the wavelength is 450 nm or less. a) What is the work function of the metal? b) What is the maximum kinetic energy of photo-electrons if the incident light has a wavelength of 400 nm? c) What is the stopping voltage required to stop photo-electrons ejected by the plate when the incident light has a wavelength of 300 nm? d)If the stopping voltage is 5...
(b) (12 pts) We conduct a photoelectric effect experiment where the electrons are ejected from a...

(b) (12 pts) We conduct a photoelectric effect experiment where the electrons are ejected from a metallic surface with speeds of up to vo when light with a wavelength Xo is used. Suppose we now use light with a wavelength 70/2. What will be the maximum speed of the electrons ejected from the metallic surface?

11. If a metal surface is irradiated with 185 nm light, electrons are ejected with a...

11. If a metal surface is irradiated with 185 nm light, electrons are ejected with a velocity of 8.90 x 105 m/s. What is the minimum frequency (in Hz) of light that could be used which will still eject electrons from the surface?
When sodium is illuminated with light of wavelength 420 nm, the electrons are ejected with 0.65...

When sodium is illuminated with light of wavelength 420 nm, the electrons are ejected with 0.65 eV of energy. When illuminated with light of wavelength 310 nm, the electrons are ejected with 1.71 eV of energy. (a) Use these data to find the work function of sodium. Find a percent difference between this and the accepted value of 2.28 eV. (b) What is the threshold frequency of sodium? (c) If we illuminated sodium with light of wavelength 150 nm, what...
The maximum speed of photoelectrons ejected from the surface of a metal is 4.07E5 m/s, when...

The maximum speed of photoelectrons ejected from the surface of a metal is 4.07E5 m/s, when light with a wavelength of 185 nm is shined on the surface. What is the work function of the metal? 2.40 eV 5.17 eV 6.24 eV 4.70 eV 1.42 eV

The maximum speed of photoelectrons ejected from the surface of a metal is 4.07E5 m/s, when...

The maximum speed of photoelectrons ejected from the surface of a metal is 4.07E5 m/s, when light with a wavelength of 185 nm is shined on the surface. What is the work function of the metal? 2.40 eV 05.17 eV O 6.24 eV 0 4.70 eV O 1.42 eV