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 2016 HSC 11 MC
What is the wavelength, in metres, of a photon with an energy of 3.5 eV?
- `1.2 × 10^(-6)`
- `3.5 × 10^(-7)`
- `1.18 × 10^(-15)`
- `5.67 × 10^(-26)`
PHYSICS, M7 2017 HSC 21
A laser emits light of wavelength 550 nm.
- Calculate the frequency of this light. (2 marks)
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- The electrons in a specific metal must absorb a minimum of `5 × 10^(-19)\ text{J}` in order to be ejected from its surface.
- Explain why electrons will not be ejected from this metal when photons of wavelength 550 nm strike its surface. Support your answer with relevant calculations. (3 marks)
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PHYSICS M7 2022 HSC 7 MC
A photon has an energy of `9.0 xx10^(-24)\ text{J}`.
What is the frequency of this radiation?
- `1.00 xx10^(-40) \ text{Hz}`
- `7.36 xx10^(-11) \ text{Hz}`
- `1.36 xx10^(10) \ text{Hz}`
- `5.97 xx10^(11) \ text{Hz}`