List of top Physics Questions on Einstein’S Photoelectric Equation: Energy Quantum Of Radiation

The surface of a certain metal is first illuminated with light of wavelength \(\lambda_1=350\,\text{nm}\), and then by light of wavelength \(\lambda_2=540\,\text{nm}\). It is found that the maximum speed of the photoelectrons in the two cases differ by a factor of \(2\). The work function of the metal (in eV) is close to \[ \left(\text{Energy of photon}=\frac{1240}{\lambda(\text{nm})}\text{ eV}\right) \]
A photon has energy \(6\,\text{eV}\). The corresponding work function of a metal is \(2\,\text{eV}\). The maximum kinetic energy of the emitted photoelectron is
A photon has energy \(6\,\text{eV}\). The corresponding work function of a metal is \(2\,\text{eV}\). The maximum kinetic energy of the emitted photoelectron is
The wavelength of visible light for the green color is 600 𝑛𝑚. The energy of photons of this color is _______ 𝑒𝑉 (rounded off to one decimal place). (Planck’s constant = $6.63 × 10^{−34} 𝐽𝑠, 1 𝑒𝑉 = 1.6 × 10^{−19} 𝐽$, speed of light = $3 × 10^8 𝑚𝑠^{−1}$)
The Bose-Einstein distribution is applied on
Which of the following is(are) CORRECT?
In a photoelectric effect experiment, a monochromatic light source emitting photons with energy greater than the work function of the metal under test is used. If the power of the light source is doubled, which one of the following statements is correct?
The half-life of a radioactive element is 10 minutes. Find the time in which its activity reduces to 1/16 of the original.