If the voltage used for a radiograph is increased, what may be the result regarding film graininess?

Increasing the voltage used for a radiograph primarily affects the quality and density of the radiographic image. When the voltage is elevated, it typically leads to an increase in the penetrative power of the X-rays produced. This increased power can result in more uniform exposure across the film, allowing for better penetration through denser materials.

As for film graininess, which is related to the size and distribution of the silver halide crystals in the film emulsion, slight increases in voltage may produce denser images without substantially altering the inherent graininess of the film. This is because the effects of increased voltage mainly relate to the exposure levels rather than the actual film's granularity characteristics.

Therefore, the correct understanding aligns with the idea that there would be little significant change in the graininess of the film when the voltage is increased; any changes in film graininess due to voltage adjustments are generally minimal and can vary depending on other concurrent factors.