Final answer:
Waves can superimpose regardless of frequency differences; this is true. However, wave-particle duality applies only to microscopic particles, making the existence of duality in macroscopic objects false.
Step-by-step explanation:
When it comes to the phenomenon of wave superposition, it is true that waves can superimpose regardless of whether their frequencies are the same or different. Waves of different frequencies will interfere with each other to create complex wave patterns; however, if the waves are coherent (having a constant phase difference) and of the same frequency, they can produce a clear and stable interference pattern. This principle is part of the broader concept of wave interference in physics.
On the matter of wave-particle duality, the statement that this duality exists for objects on the macroscopic scale is false. Wave-particle duality, a fundamental concept of quantum mechanics, primarily applies to microscopic particles such as electrons and photons. For macroscopic objects, classical physics rather than quantum mechanics provides a more accurate description of their behavior.