Question

Calculate the energy,in electron volts,of x-rays that have a frequency of 1.0×1019Hz

Answer 1

Answer on Question 60341, Physics, Atomic and Nuclear Physics

Question:

Calculate the energy, in electron volts, of x-rays that have a frequency of $1.0 \cdot 10^{19} \text{ Hz}$.

Solution:

We can find the energy of x-rays from the formula:

$$E = h f,$$

here, $h = 4.135 \cdot 10^{-15} \text{ eV} \cdot \text{s}$ is the Planck's constant, $f$ is the frequency of the x-rays.

Then, we get:

$$E = h f = 4.135 \cdot 10^{-15} \text{ eV} \cdot \text{s} \cdot 1.0 \cdot 10^{19} \text{ s}^{-1} = 4.135 \cdot 10^4 \text{ eV}.$$

Answer:

$$E = 4.135 \cdot 10^4 \text{ eV}.$$

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