Final answer:
The false statement is that turning lamps off will result in a shorter life measured in burning hours. In reality, turning lamps off extends their lifespan in calendar months. Durable LED bulbs and energy-saving fluorescent bulbs offer efficiency advantages over traditional incandescent bulbs.
Step-by-step explanation:
The statement that is NOT true regarding the life span of light bulbs is: Lamps which are turned off when not in use will have a shorter life measured in burning hours. This statement is misleading because turning lamps off when not in use actually prolongs their overall lifespan, even if it might decrease the total number of burning hours. This is because the act of turning lights off reduces power consumption and avoids unnecessary use, therefore saving energy and extending the life of the lamp when measured in calendar time. In contrast, lamps that are left on constantly accumulate burning hours faster and may fail sooner. It's also important to note that different types of bulbs, such as LED, CFL, and incandescent, have significantly different life spans and durability, with LED bulbs being the most efficient and durable option available.
Switching to energy-saving light bulbs can dramatically reduce electrical energy use. For instance, fluorescent lights are about four times more efficient than incandescent lights and LED lights are even more efficient than CFLs. Thus, using LED or CFL bulbs saves energy not only by reducing the time of use but also by their lower power consumption. Additionally, by distributing the burning hours over a longer span, turning off lamps when not in use increases the lifespan when measured in calendar months, ensuring that the benefits of the investment in such bulbs are realized fully.