Percentage change ≡ final photon energy − initial photon energyinitial photon energy × 100%,where the final photon energy refers is being collected at observation angle 𝜃 = 180𝑜 . Forincident light at photon energy 1 eV and in air (𝑛 = 1), what is the percentage change in thephoton energy?

When the current flowing through a lamp is decreased by 2%, then the percentage change in the power consumed by the lamp will be Only one correct answerA.5.48%B.4.25%C.3.96%D.6.75%

Calculate the photon energy corresponding to this wavelength. Select the option that best matches your calculated answer.

III. The energy of a photon is directly proportional to wavelength but inversely proportional to wave number.

The dye acriflavine when dissolved in water has its maximum light absorption at 4530 Å andhas maximum florescence emission at 5080 Å. The number of florescence quanta is about 53% ofthe number of quanta absorbed. What percentage of absorbed light energy is emitted asflorescence?

A source S1 is producing 1015 photons per second of wavelength 5000˙a . Another sorce S2 is producing 1.02×1015 photons per second of wavelength 5100˙A .Then, (power of S2)/(power of S1) is equal to