A Light Beam from a 2

question 56

Multiple Choice

A light beam from a 2.1 mW He-Ne laser has wavelength of 633 nm.How many photons does the laser emit in one second?

• A)6.7 × 10¹⁵
• B)8.8 × 10¹⁵
• C)1.1 × 10¹⁶
• D)1.3 × 10¹⁶

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Definitions:

Homothetic Preferences

A situation in consumer theory where preference ratios are consistent across different income levels or price changes.

Utility Function

Mathematical representation of a consumer's preference ranking for a set of goods and services.

Budget Equation

A balance formula that represents the relationship between income, expenses, and savings within a specified period.

Entry Fee

A charge that must be paid to gain access to a particular service, activity, or location.