Question:
The phenomenon of diffraction is most significant when the slit width is ________.
The phenomenon of diffraction is most significant when the slit width is ________.
Show Hint
This is why we hear sound around corners (large $\lambda$) but don't see light around them (tiny $\lambda$).
Updated On: Jun 26, 2026
- much larger than the wavelength
- much smaller than the wavelength
- comparable to the wavelength
- equal to the screen distance
- independent of the wavelength
Show Solution
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The Correct Option is C
Solution and Explanation
Step 1: Concept
Diffraction is the bending of waves around the corners of an obstacle or aperture.
Step 2: Meaning
For the bending to be noticeable, the size of the opening ($d$) must relate to the wavelength ($\lambda$).
Step 3: Analysis
If $d \gg \lambda$, light travels in straight lines; if $d$ is very small, intensity is too low.
Step 4: Conclusion
Diffraction effects are most prominent when $d \approx \lambda$. Final Answer: (C)
Diffraction is the bending of waves around the corners of an obstacle or aperture.
Step 2: Meaning
For the bending to be noticeable, the size of the opening ($d$) must relate to the wavelength ($\lambda$).
Step 3: Analysis
If $d \gg \lambda$, light travels in straight lines; if $d$ is very small, intensity is too low.
Step 4: Conclusion
Diffraction effects are most prominent when $d \approx \lambda$. Final Answer: (C)
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