Final answer:
Yes, an optical fiber can direct a light beam along a curved or twisted path due to total internal reflection, which is crucial for transmitting signals over long distances with high efficiency.
Step-by-step explanation:
The statement that an optical fiber can make a light beam travel in a path that is curved or twisted is true. Optical fibers utilize the principle of total internal reflection to guide light through a flexible and transparent medium, typically made of glass or plastic. When light enters the optical fiber at a particular angle, it is reflected within the core of the fiber multiple times, allowing it to follow the twists and turns of the fiber without escaping. This phenomenon enables the transmission of light signals over long distances with low loss, high bandwidth, and reduced crosstalk. Refraction aids in keeping the light confined in the fiber optic cable and is instrumental for transmitting signals effectively.