A Vibrating Tuning Fork of Frequency 640 Hz Is Held

question 59

Multiple Choice

A vibrating tuning fork of frequency 640 Hz is held above a tube filled with water.Assume the speed of sound to be 330 m/s.As the water level is lowered,consecutive maxima in intensity are observed at intervals of about

• A)12.9 cm
• B)19.4 cm
• C)25.8 cm
• D)51.7 cm
• E)194 cm

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Definitions:

Demand Elasticity

A measure of how much the quantity demanded of a good responds to a change in the price of that good, with elasticity greater than one indicating a high response to price changes.

Revenue-Maximizing

The strategy of setting prices and production levels to achieve the highest possible revenue, not necessarily leading to the highest profit.

Inferior Good

A type of good for which demand decreases as the income of the consumer increases, opposite to normal goods.

Income Elasticity

A measure of how much the quantity demanded of a good responds to a change in consumers' income, holding all other factors constant.