Two Pipes Closed at One End of Length L₁ and L₂

question 64

Multiple Choice

Two pipes closed at one end of length L₁ and L₂ are excited at their resonant frequencies.If the beat period is B_f Hz,then the velocity of sound is given by:

• A)B_f \(\times\) L₁ \(\times\) L₂ / (4L₁ \(\times\) 4L₂)
• B)4 \(\times\) B_f \(\times\) L₁ \(\times\) L₂ / (4L₁ - 4L₂)
• C)16 \(\times\) B_f \(\times\) L₁ \(\times\) L₂ / (4L₁ + 4L₂)
• D)4 \(\times\) B_f \(\times\) L₁ \(\times\) L₂ / (L₁ -L₂)
• E)4 \(\times\) B_f \(\times\) L₁ \(\times\) L₂ / (L₁ + L₂)

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Definitions:

Deadweight Loss

A reduction in economic effectiveness that happens when a good or service does not reach or cannot reach its equilibrium.

Quotas

Limits set by government on the quantity of goods that can be imported or produced, intended to protect domestic industries.

Deadweight Loss

The loss of economic efficiency that occurs when the equilibrium for a good or service is not achieved.

Market Intervention

Actions taken by a government or other authority to affect the market, often to correct market failures or achieve certain policy objectives.