In a Ruby Laser, an Electron Jumps from a Higher

question 45

Multiple Choice

In a ruby laser, an electron jumps from a higher energy level to a lower one. If the energy difference between the two levels is 1.8 eV, what is the wavelength of the emitted photon? (c = 3.00 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

• A) 350 nm
• B) 470 nm
• C) 650 nm
• D) 690 nm
• E) 960 nm

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Definitions:

Electroreceptors

Specialized sensory receptors that certain aquatic animals possess, allowing them to detect electrical fields in their environment.

Keen Olfaction

The highly developed sense of smell, often found in animals, enabling them to detect and distinguish odors more acutely.

Metamorphosis

Transition from one developmental stage to another, such as from a larva to an adult. See also complete metamorphosis and incomplete metamorphosis.

Amphibia

A class of cold-blooded vertebrates that includes frogs, toads, salamanders, and newts, distinguished by their ability to live both in water and on land.