Gr 10 Physical Sciences Ch 7: Speed of a longitudinal wave
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Questions and Answers

What is the unit of measurement for wave speed?

  • joule per second (J·s⁻¹)
  • meters per second (m·s⁻¹) (correct)
  • hertz (Hz)
  • kilogram per second (kg·s⁻¹)

What is the formula to calculate the speed of a longitudinal wave?

  • v = λ × f
  • v = λ × T
  • v = T / λ
  • v = λ / T (correct)

What is the relationship between period and frequency?

  • f = T × 2
  • f = 1 / T (correct)
  • f = T - 1
  • f = T × π

What is the wavelength of a longitudinal wave?

<p>The distance between two successive compressions (C)</p> Signup and view all the answers

What is the wave equation for the speed of a longitudinal wave?

<p>v = λ × f (D)</p> Signup and view all the answers

What is the quantity of wave speed?

<p>Wave speed (D)</p> Signup and view all the answers

What is the definition of wave speed?

<p>The distance a wave travels per unit time (A)</p> Signup and view all the answers

If the frequency of a longitudinal wave is increased, what happens to its wave speed?

<p>It increases (D)</p> Signup and view all the answers

What is the SI unit of wavelength?

<p>meters (B)</p> Signup and view all the answers

If the wavelength of a longitudinal wave is increased, what happens to its frequency?

<p>It decreases (D)</p> Signup and view all the answers

What is the relationship between the distance travelled by a longitudinal wave and its time taken?

<p>The distance travelled is directly proportional to the time taken (D)</p> Signup and view all the answers

If the period of a longitudinal wave is decreased, what happens to its wave speed?

<p>It increases (D)</p> Signup and view all the answers

If the wavelength of a longitudinal wave is doubled, what happens to its speed?

<p>It doubles (A)</p> Signup and view all the answers

A longitudinal wave has a frequency of 50 Hz and a wavelength of 10 m. What is its speed?

<p>500 m/s (A)</p> Signup and view all the answers

If a longitudinal wave travels a distance of 20 m in 2 seconds, what is its wavelength if its frequency is 10 Hz?

<p>40 m (B)</p> Signup and view all the answers

What is the effect on the wave speed if the frequency of a longitudinal wave is halved?

<p>It remains the same (D)</p> Signup and view all the answers

A longitudinal wave has a speed of 300 m/s and a wavelength of 15 m. What is its frequency?

<p>20 Hz (D)</p> Signup and view all the answers

If the speed of a longitudinal wave is increased, what happens to its wavelength if its frequency remains constant?

<p>It increases (D)</p> Signup and view all the answers

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