Diffraction Of Light - Practice Questions & MCQ
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main
Quick Facts
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15 Questions around this concept.
Solve by difficulty
EASYDirection : In the following question, a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Diffraction of sound wave observed more easily as compare to length wave
Reason : The wavelength of sound waves is more and wave length of light waves is less.
Why is the diffraction of sound waves more evident in daily experience than that of a light wave?
Consider the diffraction pattern for a small pinhole. As the size of the hole is increased
A. the size decreases.
B. the intensity increases.
C. the size increases.
D. the intensity decreases.
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Consider sunlight incident on a slit of width 104 Ao. The image seen through the slit shall
Concepts Covered - 1
Diffraction
Diffraction
The phenomenon of bending of light around the corners of an obstacle of the size of the wavelength of light is called diffraction.
- The phenomenon resulting from the superposition of secondary wavelets originating from different parts of the same wavefront is defined as a diffraction of light.
- Diffraction is the characteristic of all types of waves.
- The wavelength of the wave is directly proportional to its degree of diffraction.
From the above figure, we can say that if slit width is more then wave will detract less.
Condition for Diffraction:
- The essential condition for diffraction to occur is that the wavelength of light should be comparable to that of the size of the obstacle.
i.e If the size of the obstacle is comparable to that of the wavelength of the wave only then we can observe the diffraction phenomena.
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