Photon Energy Comparison: Electromagnetic Spectrum
The energy of a single photon is directly related to its frequency and inversely related to its wavelength. This relationship is described by the Planck-Einstein relations:
$E = hf$
where $E$ is the energy of the photon, $h$ is Planck's constant, and $f$ is the frequency of the radiation.
Alternatively, using the relationship between frequency ($f$), wavelength ($\lambda$), and the speed of light ($c$), $f = \frac{c}{\lambda}$, the energy can be expressed as:
$E = \frac{hc}{\lambda}$
This means higher frequency or shorter wavelength radiation corresponds to higher energy per photon.
Electromagnetic Spectrum Ordering
The given types of electromagnetic radiation are ordered by increasing energy (and frequency, decreasing wavelength) as follows:
- Infra-red ray (Lowest energy)
- Visible-ray
- Ultra-violet ray
- X-ray (Highest energy)
Identifying Highest Energy Photon
Based on their position in the electromagnetic spectrum, X-rays have the highest frequency and shortest wavelength among the given options. Therefore, X-rays possess the largest energy per photon.
Important Questions from Physics
Two balls, A and B, are thrown simultaneously, a vertically upward with a speed of 20 m/s from the ground and B vertically downward from a height of 40 m with the same speed and along the same line of motion. At what points do the two balls collide by taking acceleration due to gravity as 9.8 m/s 2?
On the basis of which principle does soap clean surfaces?
Which one of the following devices is used to measure atmospheric pressure?
Which one of the following energy is stored in the links between the atoms?
Who among the following has explained the phenomenon of photoelectric effect?
