The James Webb Space Telescope (JWST) is sensitive to wavelengths from 6.0 \(\times\) 10\(^{-7}\) m to 2.8 \(\times\) 10\(^{-5}\) m. What is the minimum photon energy that it can detect? (3 marks) --- 6 WORK AREA LINES (style=lined) ---
PHYSICS, M7 2023 HSC 15 MC
What evidence resulting from investigations into the photoelectric effect is consistent with the model of light subsequently proposed by Einstein?
- Photoelectrons were only ejected from a metal if the light was less than a specific wavelength.
- Increasing the intensity of light on a metal increased the maximum kinetic energy of the photoelectrons.
- If photons had sufficient energy to eject photoelectrons from a metal, the maximum kinetic energy was independent of the type of metal used.
- The probability of photoelectrons being emitted from a metal was proportional to the duration of exposure to light for any given wavelength used.