A Ray of Light Consisting of Blue Light (Wavelength 480

question 24

Multiple Choice

A ray of light consisting of blue light (wavelength 480 nm) and red light (wavelength 670 nm) is incident on a thick piece of glass at 80°.What is the angular separation between the refracted red and refracted blue beams while they are in the glass? (The respective indices of refraction for the blue light and the red light are 1.4636 and 1.4561.)

• A) 0.27°
• B) 0.33°
• C) 0.36°
• D) 0.46°
• E) 0.54°

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Definitions:

Epicotyl

The portion of a seedling stem above the cotyledons, which extends and develops into the first true leaves.

Embryo

An early stage of development in multicellular organisms following fertilization and before fetal stage, showing initial formation of organs and structures.

Cotyledon(s)

Cotyledons are the first leaves that appear from a germinating seed, playing a crucial role in photosynthesis and the storage of nutrients during the early stages of plant development.

Tissue Culture

Tissue culture is a technique of growing tissues or cells in an artificial medium outside their original body for the purposes of research or medical treatment.