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Q 9

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 1114

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Short Answer

What is the energy, in eV, of (a) a 450 MHz radio-frequency photon, (b) a visible-light photon with a wavelength of 450 nm, and (c) an x-ray photon with a wavelength of 0.045 nm?

a) Energy is equal to .

b) Energy is equal to 2.76 eV.

c) Energy is equal to 27.6 keV.

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Step by Step Solution

Step 1. Given Information is :a) a 450 MHz radio-frequency photon b) a visible-light photon with a wavelength of 450 nmc) an x-ray photon with a wavelength of 0.045 nm 

We need to find out the energy of the given photons.

Step 2. Part a) Using expression of Energy of a photon.

Step 3. Part b) Using expression of Energy of a photon. 

Step 4. Part c) Using expression of Energy of a photon. 

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