The condition for observing Fraunhofer diffraction from a single slit is that the wave front incident on the slit should be
The condition for observing Fraunhofer diffraction from a single slit is that the wave front incident on the slit should be Correct Answer Plane
CONCEPT:
Diffraction of Light:
- The phenomenon of bending of waves around the corners of an obstacle/aperture of the size of the wavelength of a wave is called diffraction.
- Diffraction is the characteristic of all types of waves.
- The greater the wavelength of the wave higher will be its degree of diffraction.
- The condition of diffraction is that the width of the obstacle must be less than or comparable with the wavelength of the wave.
Types of diffraction:
- Fresnel diffraction
- Fraunhofer diffraction
Fraunhofer diffraction:
- In this type of diffraction, both source and screen are effectively at an infinite distance from the diffracting surface.
- In Fraunhofer diffraction, the plane wavefront is incident on the slit.
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EXPLANATION:
Fraunhofer diffraction:
- In this type of diffraction, both source and screen are effectively at an infinite distance from the diffracting surface.
- In Fraunhofer diffraction, the plane wavefront is incident on the slit.
- Hence, option 3 is correct.
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Feb 20, 2025