The Sound Level at 1

question 18

Multiple Choice

The sound level at 1.0 m from a certain talking person talking is 60 dB. You are surrounded by five such people, all 1.0 m from you and all talking equally loud at the same time. The threshold of hearing is 1.0 × 10^-12 W/m². What sound level are you being exposed to? You can neglect any absorption, reflection, or interference of the sound. The threshold of hearing is 1.0 × 10^-12 W/m².

• A) 300 dB
• B) 60 dB
• C) 74 dB
• D) 67 dB
• E) 81 dB

---

Definitions:

Substitution Effect

The substitution effect describes the change in consumption patterns due to a shift in prices, leading consumers to substitute a cheaper product for a more expensive one.

Income Effects

Changes in consumers' purchasing power and consumption patterns that occur due to changes in their income, influencing how much of a product they can buy.

Indifference Curve

A graph representing different bundles of goods between which a consumer is indifferent, showing the combination of two goods that give the same level of satisfaction to the consumer.

Marginal Utility

The change in total utility a person receives from consuming an additional unit of a good or service.