Which of the following statement(s) is/are true regarding the speed of sound at 25°C in different mediums? 1. The speed of sound in aluminum is 6220 m/s. 2. The speed of sound in nickel is 6240 m/s.

Which of the following statement(s) is/are true regarding the speed of sound at 25°C in different mediums? 1. The speed of sound in aluminum is 6220 m/s. 2. The speed of sound in nickel is 6240 m/s. Correct Answer <span style="color: rgb(37, 37, 37); ">Neither 1 nor 2 is true.</span>

The correct answer is Neither 1 nor 2 is true.

Additional Information

• The speed of sound in a medium depends:
  • The temperature of the medium.
  • The speed of sound decreases when we go from solid to a gaseous state.
  • In any medium, as we increase the temperature the speed of sound increases.
  • The velocity of sound through a gas is inversely proportional to the square root of the density of the gas.
• Sound is mechanical energy that produces a sensation of hearing.
  • Sound is produced due to the vibration of different objects.
  • The sound wave propagates as compressions & rarefactions in the medium.
  • Sound waves are longitudinal waves.
  • Sounds of frequencies below 20 Hz are called infrasonic sound or infrasound.
  • Rhinoceroses communicate using infrasound of frequency as low as 5 Hz.
  • Whales and elephants produce sound in the infrasound range.
  • Frequencies higher than 20 kHz are called ultrasonic sound or ultrasound.
  • Ultrasound is produced by dolphins, bats, and porpoises.