Final answer:
Trees should be planted to check noise pollution around industries, as they act as natural sound barriers by absorbing and blocking the propagation of sound, unlike noise-cancelling devices which use destructive interference.
Step-by-step explanation:
To check noise pollution, trees should be planted around industries. Trees serve as natural sound barriers, absorbing and blocking the propagation of noise and reducing its impact on the surrounding areas. Additionally, they can enhance the air quality by consuming carbon dioxide and releasing oxygen.
Unlike trees, noise-cancelling devices, such as headphones, use technology to create a sound wave exactly opposite to the incoming noise, resulting in destructive interference. This is quite different from just planting trees, which physically obstruct and absorb sound waves.
Sound barriers, often constructed out of materials like concrete or other dense substances, are also designed to reduce noise by reflecting or absorbing sound waves. However, trees can often be a more aesthetically pleasing option that also provides additional environmental benefits.
Solar panels, while beneficial for energy production, do not significantly contribute to noise reduction and are not the correct answer in this context.