Question

If the work function of a material is 2.20 eV, what frequency of incident light would...

If the work function of a material is 2.20 eV, what frequency of incident light would give a maximum kinetic energy of 0.25 eV to the photoelectrons ejected from the surface of this material? (1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ∙ s)

5.92 × 1014 Hz

3.53 × 1014 Hz

1.02 × 1014 Hz

2.50 × 1014 Hz

2.05 × 1014 Hz

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The work function for aluminum is 4.2 eV. (a) What is the cutoff frequency of light...
The work function for aluminum is 4.2 eV. (a) What is the cutoff frequency of light incident on an aluminum target that releases photoelectrons from its surface? (b) Find the corresponding cutoff wavelength. (c) If photons of energy 5.0 eV are incident on an aluminum target what is the maximum kinetic energy of the ejected photoelectrons? (d) what is the maximum velocity of a photoelectron traveling from the anode to the cathode of a photocell? (d) If a blue beam...
The work function for aluminum is 4.2 eV. (a) What is the cutoff frequency of light...
The work function for aluminum is 4.2 eV. (a) What is the cutoff frequency of light incident on an aluminum target that releases photoelectrons from its surface? (b) Find the corresponding cutoff wavelength. (c) If photons of energy 5.5 eV are incident on an aluminum target what is the maximum kinetic energy of the ejected photoelectrons? (d) what is the maximum velocity of a photoelectron traveling from the anode to the cathode of a photocell? (d) If a red laser...
a) A photon of wavelength 43 nm is incident upon a metal in a photoelectric apparatus....
a) A photon of wavelength 43 nm is incident upon a metal in a photoelectric apparatus. A stopping voltage of 21 V was obtained. What is the threshold frequency of the metal? (format of a.b x 10cdHz) b) Light with a frequency of 5.00 x 1014 Hz illuminates a photoelectric surface that has a work function of 2.10 x 10-19 J. What is the maximum kinetic energy of the emitted photoelectrons? (format of a.bc x 10-de J ) c) Light...
What is the frequency f in Hz of light that has wavelength 157 nm? (Use 1...
What is the frequency f in Hz of light that has wavelength 157 nm? (Use 1 eV = 1.602 ✕ 10−19 J, e = 1.602 ✕ 10−19 C, c = 2.998 ✕ 108 m/s, and h = 6.626 ✕ 10−34 J · s = 4.136 ✕ 10−15 eV · s as necessary.)
The work function for gold is 5.01 eV. (a) Find the threshold frequency and wavelength for...
The work function for gold is 5.01 eV. (a) Find the threshold frequency and wavelength for the photoelectric effect to occur when monochromatic electromagnetic radiation is incident on the surface of a sample of gold. In Hz and nm (b) Find the maximum kinetic energy of the electrons if the wavelength of the incident light is 160 nm.in eV ( c) Find the maximum kinetic energy of the electrons if the wavelength of the incident light is 220 nm. In...
The work function for copper is 4.5 eV. (a) Find the threshold frequency and wavelength for...
The work function for copper is 4.5 eV. (a) Find the threshold frequency and wavelength for the photoelectric effect to occur when monochromatic electromagnetic radiation is incident on the surface of a sample of copper. Hz nm (b) Find the maximum kinetic energy of the electrons if the wavelength of the incident light is 190 nm. eV (c) Find the maximum kinetic energy of the electrons if the wavelength of the incident light is 240 nm. eV
The work function of sodium is 2.28 eV. A laser, whose light has a frequency of...
The work function of sodium is 2.28 eV. A laser, whose light has a frequency of 4 x 10^15 Hz, shines on the surface of a sodium bar. If the intensity of the laser light is tripled, how will the quantity of electrons emitted from the surface of the bar change? [h = 4.14 x 10^15 eV-s] A)
A bright star 20 light-years away emits violet light with wavelength of 380 nm as seen...
A bright star 20 light-years away emits violet light with wavelength of 380 nm as seen from the earth. A spaceship is covered with tinanium on its surface, whose work function is 4.3 eV. a) When the spaceship is stationed on earth, determine whether photoelectrons are ejected from the spaceship due to the violet starlight. If so, compute their maximum kinetic energy. b) The spaceship has just departed earth (with negligible travel distance so far) and is flying towards the...
a) A photoelectric surface has a work function of 3.30 x 10-19 J. What is the...
a) A photoelectric surface has a work function of 3.30 x 10-19 J. What is the threshold frequency of this surface? (format of a.bc x 10de Hz) b) What is the stopping voltage of an electron that has 5.40 x 10-19 J of kinetic energy? (3 digit answer) c) A photoelectric surface requires a light of maximum wavelength of 675 nm to cause electron emission. What is the work function (in eV) of this surface? (3 digit answer) d) A...
When light with a wavelength of 221 nm is incident on a certain metal surface, electrons...
When light with a wavelength of 221 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.28 × 10−19 J. Determine the wavelength (in nm) of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface.