Which of the following is one of the main functions of a transistor in a circuit?

Transistor, semiconductor device for amplifying, controlling, and generating electrical signals. Transistors are the active components of integrated circuits, or “microchips,” which often contain billions of these minuscule devices etched into their shiny surfaces.

The main functions in a circuit are: detecting, rectifying, amplifying, switching, voltage stabilizing, signal modulating and so on.

Explanation:

we need to know the time interval during which the force acts. impulse of force = momentum change

wavelength divides in half and speed stays the same.