Question

A sound wave has a frequency of $ 440 \, \text{Hz} $. What is its time period?

• A. \( 0.00227 \, \text{s} \)
• B. \( 0.002 \, \text{s} \)
• C. \( 0.0025 \, \text{s} \)
• D. \( 0.004 \, \text{s} \)

Hint:

Remember: The time period is the reciprocal of the frequency, \( T = \frac{1}{f} \).

Answer 1

The Correct Option is A

Step 1: Apply the wave period formula
The time period \( T \) of a wave is defined as the inverse of its frequency \( f \):\[T = \frac{1}{f}\]
Step 2: Input the provided frequency
The frequency is given as \( f = 440 \, \text{Hz} \).Substituting this into the formula yields:\[T = \frac{1}{440} = 0.00227 \, \text{s}\]
Result:
The calculated time period for the sound wave is \( 0.00227 \, \text{s} \). This corresponds to option (1).