Which statement is FALSE with respect to an incandescent lamp?

Dimming an incandescent lamp does not inherently decrease its life; in fact, it can actually prolong it under certain conditions. When an incandescent lamp is dimmed, the filament operates at a lower temperature, which can reduce stress and wear on the component, potentially extending its lifespan.

In contrast, when an incandescent lamp is dimmed, it experiences a reduction in light output and efficiency. Dimming decreases the amount of electrical current flowing through the filament, leading to lower luminous output (brightness). This decrease in output is accompanied by a shift in color temperature, as dimming typically causes the light to appear warmer in hue.

Furthermore, when the light output decreases due to dimming, the efficiency can also decrease, as the lamp uses a certain amount of power to produce a given amount of light. Thus, while dimming can help save energy, it alters the balance between light output and energy consumption, often not in favor of increased efficiency.