22. The working of the quartz crystal in the watch is based on the A.Piezo - electric Effect B.Edison Effect C.Photoelectric Effect D.Johnson Effect
Option A Solution: The quartz crystal oscillates (vibrates back and forth) at a precise frequency: exactly 32768 times each second. This is due to Piezoelectric Effect. Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress.
