The jellyfish Aequorea Victoria creates a protein (GFP) that, when illuminated w

Question

The jellyfish Aequorea Victoria creates a protein (GFP) that, when illuminated with blue light (lambda = 395 nm) emits green light (lambda = 508 nm). One way this conversion of frequencies could work is the following: The blue light is less energetic than the green light. The blue photon scatters off a protein are extracts energy from it. coming out green. The blue light is more energetic than the green light. The blue photon is absorbed by the protein, which then goes into a highly excited state. It decays pack to the ground state in two stages, going through an intermediate excited state and emitting two photons of smaller energy, one of which is green. The protein acts as a prism, changing the wavelength of the blue light as it moves through the protein. stretching it into green light. The energy s not the relevant quantity. The blue light has a higher frequency than the green light. The blue light sets some of the electrons in the protein oscillating at a high frequency. The lower frequency is excited in conjunction with in the way that a crystal goblet, rung by a pure tone, vibrates with other associated tones. None of the above. When high energy electrons are incident on a tungsten target, a broad spectrum of x-rays are given off. Most of the x-ray photons are spread over a range of energies, but there are a large number of x-rays with a specific energy -about 60 keV. This sharp x-ray line arises because: An electron bounces off a tungsten atom and since accelerating a charge leads to radiation. it gives off an x-ray when it does so. An electron excites a tungsten atom into a particular excited state and it gives off a particular x-ray when it returns to its original state. An electron shows via many coupons with electrons in many tungsten atoms. The combined effect of these collisions leads to the sharp x-ray line. An electron is absorbed by a nucleus of tungsten and convened into energy. None of the above.

Explanation / Answer

A.

The blue light smaller wavelength, indcating higher energy, as E = hc/wavelength

so, Option 2 is correct.

B.

Opton 2 is correct as excitation takes place.

The

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