The Wavelength of Light Emitted from a Particular Red Diode

question 26

Multiple Choice

The wavelength of light emitted from a particular red diode laser is 651 nm.What is the wavelength in meters?

• A) 6.51 × 10¹¹ m
• B) 6.51 × 10^-2 m
• C) 6.51 × 10^-4 m
• D) 6.51 × 10^-7 m
• E) 6.51 × 10^-9 m

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Definitions:

Racemic Mixture

A mixture containing equal amounts of left- and right-handed enantiomers of a chiral molecule, making it optically inactive.

Enantiomer

One of a pair of molecules that are mirror images of each other and cannot be superimposed, often possessing different biological activities.

Polarimetry Tube

A laboratory device used to measure the rotation of polarized light as it passes through optically active substances.

Specific Rotation

A physical property of chiral compounds, describing the direction and magnitude of rotation of plane-polarized light by a substance.