Which physicist is known for discovering that any periodic wave can be represented as an infinite number of weighted sinusoids, i.e., the sum of sine and cosine waves?

Correct option is B

The correct answer is (b) Jean Baptiste Joseph Fourier.
• The physicist known for discovering that any periodic wave can be represented as an infinite number of weighted sinusoids is Jean Baptiste Joseph Fourier.
• This discovery is known as the Fourier series or Fourier transform.
• Fourier's work has had a significant impact on fields such as mathematics, physics, and engineering.
• The Fourier series is used in signal processing to analyze and manipulate signals, such as those in audio and video processing.