If the wavelengths of sound and white light become equal, it would not cause any immediate problems or issues. However, it's important to note that sound and light are two different types of waves that propagate through different mediums and have different properties.
Sound waves are mechanical waves that require a medium, such as air, water, or solids, for their propagation. They travel relatively slowly compared to light waves, and their wavelengths can range from a few centimeters to several meters. Sound waves are associated with the compression and rarefaction of molecules in the medium, and they produce audible vibrations that our ears can perceive.
On the other hand, white light consists of a mixture of different wavelengths of visible light, which range from approximately 400 nanometers (violet) to 700 nanometers (red). These wavelengths are much shorter than those of sound waves, and light waves are electromagnetic in nature. They can travel through a vacuum, do not require a medium, and propagate at a speed of approximately 3 x 10^8 meters per second.
If, hypothetically, the wavelengths of sound and white light were equal, it would imply that the sound waves have become extremely short (in the nanometer range) or the light waves have become extremely long (in the meter range). However, this scenario is not physically possible within the normal range of sound and light wavelengths that we encounter in everyday life.
In conclusion, the hypothetical scenario where the wavelengths of sound and white light become equal is not a practical situation, and it would not cause any significant problems. It's important to understand the distinct characteristics and behaviors of sound waves and light waves in their respective domains.