Question

calculate wavelength of a photon that has three time much energy as that of photon of wavelength 779nm
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Answer 1

Answer:

λ2≈ 260 nm

Explanation

the wavelength of a photon that has three times as much energy as that of a photon of

Wavelength 779 nm.

Calculation:

General expression is energy of a wave:

E= hc/ λ

So, we can say that energy of a wave is inversely proportional to wavelength.

E α 1/λ

So, taking corresponding ratios:

So, final answer is:

∴E1/E2 = λ2/λ1

E1/3E1 = λ2/779

λ2 = 779/3

λ2≈ 260 nm