A Laser Used in DVD Players Has a Wavelength of 405

question 110

Multiple Choice

A laser used in DVD players has a wavelength of 405 nm. What is the energy of this light in joules?

• A)4.91 × 10⁻²⁸ J
• B)4.91 × 10⁻¹⁹ J
• C)8.05 × 10⁻³² J
• D)8.05 × 10⁻²³ J
• E)2.98 × 10⁻³² J

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Definitions:

Wage Rate

The amount of money paid to an employee per unit of time worked, often expressed per hour or year.

Rental Cost

The price paid for the temporary use of a good, service, or property owned by another party.

Optimal Combination

An optimal combination refers to the selection of goods, services, or inputs that provides the highest satisfaction or return for a given cost or the lowest cost for a given level of satisfaction or output.

Inputs

Inputs are the resources used in the production process to produce goods or services, including labor, capital, materials, and energy.