Which of the following phenomena occurs when a wave passes through a narrow slit?
Show answer & explanation
Correct answer: D
Explanation
Answer: Diffraction
Explanation: When a wave passes through a narrow slit, it spreads out after passing through the opening. This phenomenon is called diffraction. It is most clearly observed when the size of the slit is comparable to the wavelength of the wave.
Additional Key Facts
Diffraction occurs with all types of waves (light, sound, water waves).
The effect is stronger when the slit width is small.
It explains why sound can be heard around corners.
It is a key concept in wave optics.
Diffraction patterns are used in spectroscopy and optical instruments.
Potential Exam-Oriented Questions & Answers
Question: When is diffraction most noticeable?
Answer: When the slit width is comparable to the wavelength
Question: What is the study of light diffraction called?
Answer: Wave optics