The neon lamp was connected to an alternating current network, the voltage of which is twice the voltage of burning and extinguishing the lamp. How often the light will flash if the frequency of the current in the network is 400 Hz.
Since the changes in the current are twice the response time (ignition and extinguishing) of the light bulb, it will not flash, with a certain time delay the light bulb will light up and no further changes will occur. The light will just be on.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.