Question:
Consider sunlight incident on a slit of width $10^{4} ?$ . The image seen through the slit shall
Consider sunlight incident on a slit of width $10^{4} ?$ . The image seen through the slit shall
Updated On: Nov 21, 2022
- be a fine sharp slit white in colour at the centre
- a bright slit white at the centre diffusing to zero intensities at the edges
- a bright slit white at the centre diffusing to regions of different colours
- only be a diffused slit white in colour
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The Correct Option is A
Solution and Explanation
Visible range,$ \lambda = 3900 ?$ to $7000 ?$
Given width of the slit, $a = 10^4 ? = 10000 ?$
Thus $a > \lambda$, Hence, no diffraction occurs.
The image seen through the slit shall be a fine sharp slit white in colour at the centre.
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Concepts Used:
Wave Optics
- Wave optics are also known as Physical optics which deal with the study of various phenomena such as polarization, interference, diffraction, and other occurrences where ray approximation of geometric optics cannot be done. Thus, the section of optics that deals with the behavior of light and its wave characteristics is known to be wave optics.
- In wave optics, the approximation is carried out by utilizing ray optics for the estimation of the field on a surface. Further, it includes integrating a ray-estimated field over a mirror, lens, or aperture for the calculation of the transmitted or scattered field.
- Wave optics stands as a witness to a famous standoff between two great scientific communities who devoted their lives to understanding the nature of light. Overall, one supports the particle nature of light; the other supports the wave nature.
- Sir Isaac Newton stood as a pre-eminent figure that supported the voice of particle nature of light, he proposed a corpuscular theory which states that “light consists of extremely light and tiny particles, called corpuscles which travel with very high speeds from the source of light to create a sensation of vision by reflecting on the retina of the eye”.