Is the frequency adjustable?

Is the frequency adjustable?

• A. Yes
• B. No
• C. Only after changing the medium
• D. Only for certain frequencies

Answer: (B)

The frequency is set by the source’s oscillator and is not adjustable in this setup. In many devices, especially those using a crystal oscillator, the frequency is fixed by the crystal’s resonant frequency, so it doesn’t change when you alter the medium through which the wave travels. The medium can affect how fast the wave propagates and how it attenuates, and it can change the wavelength, but it doesn’t change the rate of oscillation itself. To change frequency, you’d need a tunable oscillator or a different transducer designed for multiple frequencies. So, the frequency cannot be adjusted.

The frequency is set by the source’s oscillator and is not adjustable in this setup. In many devices, especially those using a crystal oscillator, the frequency is fixed by the crystal’s resonant frequency, so it doesn’t change when you alter the medium through which the wave travels. The medium can affect how fast the wave propagates and how it attenuates, and it can change the wavelength, but it doesn’t change the rate of oscillation itself. To change frequency, you’d need a tunable oscillator or a different transducer designed for multiple frequencies. So, the frequency cannot be adjusted.