A photoelectric cell is connected in series with a battery of emf 2 V. Photons of energy 6 eV are incident on the cathode of the photoelectric cell. The work function of the surface of the cathode is 3 eV. What is the maximum kinetic energy of the photoelectrons that reach the anode?
A blackbody is heated, and its emission curve shifts and grows. As temperature increases, which statement correctly describes the peak intensity and peak wavelength together?
The energy of a quantum is directly proportional to its:
An electron is ejected with a maximum kinetic energy of 1.2 eV when light of energy 3.5 eV strikes a metal. What is the work function?
The wave model of light fails to explain the photoelectric effect because it predicts that:
Which phenomenon provides the best evidence for the particle nature of light?
The minimum energy required to eject an electron from a metal surface is called the:
An atom vibrates with a frequency of \(4.0 \times 10^{13}\ \text{Hz}\). What is the minimum energy that can be emitted by this atom?
Calculate the energy of a photon with a wavelength of 400 nm. (\(hc = 1240\\ \text{eV·nm}\))
According to Planck's hypothesis, if the frequency of a vibrating atom is doubled, the energy of each quantum emitted is:
Which equation correctly relates photon energy (\(E\)), work function (\(W\)), and maximum kinetic energy (\(KE_{\max}\))?
The maximum kinetic energy of photoelectrons is independent of the:
For a given metal, if the incident light frequency exactly equals the threshold frequency, the ejected electrons will have a maximum kinetic energy of:
An atom vibrates at \(4.0 \times 10^{13}\ \text{Hz}\). What is the minimum energy that can be emitted?
An electron is ejected with \(KE_{\max} = 1.2\ \text{eV}\) when light of energy 3.5 eV strikes a metal. What is the work function?
If incident light has a frequency below the threshold frequency, increasing its intensity will:
What is the value of Planck's constant?
Light of frequency \(f\) is incident on a metal with threshold frequency \(f_0\), where \(f < f_0\). The intensity of the light is then tripled. What is the effect on the photoelectric current?
Light of wavelength 200 nm is incident on a metal surface with work function 3.0 eV. What is the maximum kinetic energy of the emitted photoelectrons?
(h = 6.63 × 10⁻³⁴ J s, c = 3.0 × 10⁸ m s⁻¹, 1 eV = 1.6 × 10⁻¹⁹ J)
In the photoelectric effect, light behaves as:
Which statement correctly explains why the maximum kinetic energy of photoelectrons is independent of the intensity of incident radiation?
If the work function of a metal is 3.0 eV, what is the threshold wavelength?
In the photoelectric effect, one photon interacts with one electron. Which statement explains why the maximum kinetic energy of emitted electrons does not depend on the intensity of the incident light?
If the intensity of light is doubled while keeping its frequency constant (above threshold), the stopping potential will:
Who successfully explained the photoelectric effect using the concept of photons?