Tunneling: an 80-EV Electron Impinges Upon a Potential Barrier 100

question 44

Multiple Choice

Tunneling: An 80-eV electron impinges upon a potential barrier 100 eV high and 0.20 nm thick. What is the probability the electron will tunnel through the barrier? (1 eV = 1.60 × 10^-19 J, m_proton = 1.67 × 10^-27 kg, ħ = 1.055 × 10^-34 J ∙ s, h = 6.626 × 10^-34 J ∙ s)

• A) 0.011%
• B) 1.1%
• C) 0.11%
• D) 1.1 × 10^-4 %
• E) 7.7 × 10^-10 %

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Definitions:

Dorsal Stream

The neural pathway in the brain that is primarily responsible for processing visual motion and spatial location, extending from the occipital to the parietal lobes.

Parietal Lobe

A region of the cerebral cortex involved in processes related to sensory information from the body, spatial awareness, and navigation.

Receptive-field Hierarchy

A concept in neuroscience describing how sensory information is processed in a series of increasingly complex and integrative levels within the nervous system.

Lgn Cell

Refers to cells in the lateral geniculate nucleus, a part of the thalamus in the brain involved in processing visual information.