Which statement is FALSE with respect to linear fluorescent lamps?

The statement regarding gas fill determining lamp color is inaccurate. The color of light emitted by linear fluorescent lamps is primarily influenced by the phosphor coating on the inside of the glass tube. This coating consists of various materials that emit specific wavelengths when excited by ultraviolet light produced from gas-discharge inside the lamp.

The ballast is essential for starting and regulating the flow of electrical current through the lamp, which is crucial for its operation. This ensures that the lamp receives the appropriate voltage and current, preventing issues such as flickering or premature failure.

The relationship between the physical length of the fluorescent tube and its light output is also key. Generally, a longer tube can produce more light output, as there is more surface area for the phosphors to emit light.

Thus, the role of gas fill in determining color is not accurate, as it is the phosphor coating that has the dominant influence on the color of the light emitted.