The crystal oscillator is based on the photoelectric effect

The statement is not accurate. The crystal oscillator is not based on the photoelectric effect. Instead, it is based on the piezoelectric effect.

Here's a step-by-step explanation:

1. The crystal oscillator is an electronic device that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a precise frequency.

2. This frequency is commonly used to keep track of time, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.

3. The most common type of piezoelectric resonator used is the quartz crystal, so oscillator circuits incorporating them became known as crystal oscillators.

4. The photoelectric effect, on the other hand, is the emission of electrons or other free carriers when light shines on a material. Electrons emitted in this manner can be called photoelectrons.

5. Therefore, the crystal oscillator is not based on the photoelectric effect. It is based on the piezoelectric effect.