The ratio of energies of two photons of wavelengths 2000 A - and 4000 A -A- 1- 4B- 4- 1C- 1- 2D- 2- 1

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Standard XII

Chemistry

Nature of Electromagnetic Radiation

The ratio of ...

Question

The ratio of energies of two photons of wavelengths $2000 A^{\circ}$ and $4000 A^{\circ}$ .

1:4

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4:1

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1:2

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2:1

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Solution

The correct option is D
2:1

$E_{1} : E_{2} = λ_{2} λ_{1}$

= $4000 : 2000$

= $2 : 1$

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The ratio of energies of two photons of wavelengths 2000 A∘ and 4000 A∘.

The correct option is D 2:1 E1:E2 = λ2λ1 = 4000:2000 = 2:1

The ratio of energies of two photons of wavelengths $2000 A^{\circ}$ and $4000 A^{\circ}$ .

The correct option is D
2:1

$E_{1} : E_{2} = λ_{2} λ_{1}$

= $4000 : 2000$

= $2 : 1$