Red Light Is Viewed Through a Thin Vertical Soap Film $\lambda$

question 40

Multiple Choice

Red light is viewed through a thin vertical soap film.At the third dark area shown, the thickness of the film, in terms of the wavelength $\lambda$ within the film, is:

• A)"\(\lambda\)/4"
• B)"\(\lambda\)/2"
• C)"\(\lambda\)"
• D)"3\(\lambda\)/4"
• E)"5\(\lambda\)/4"

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Definitions:

Narcotics

Drugs derived from opium that are capable of relieving pain.

Opium

A narcotic drug obtained from the poppy plant, used historically for pain relief and recreationally for its euphoric effects, leading to potential addiction.

Relieving Pain

Concerns the methods and techniques used to reduce or alleviate pain, whether through medical, psychological, or alternative therapies.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing and sending out signals.