Class 12PhysicsWave OpticsFresnel distance, Diffraction through circular slit, concept of Airy Disc, Rayleigh Criterion of Resolution , Fraunhofer diffraction
EasyWhat do the Fraunhofer lines in the solar spectrum indicate?
- AAbsorption of certain wavelengths in the photosphere of the Sun.
- BAbsorption of certain wavelengths in the chromosphere of the Sun.
- CThe Sun does not emit all wavelengths.
- DNuclear reactions occurring in the Sun.
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Similar Questions
The condition for observing Fraunhofer diffraction from a single slit is that the wave front incident on the slit should be ............
Easy
View SolutionFraunhofer lines are produced by
Easy
View SolutionIn the Fraunhofer diffraction experiment,$L$ is the distance between the screen and the obstacle,$b$ is the size of the obstacle,and $\lambda$ is the wavelength of the incident light. The general condition for the applicability of Fraunhofer diffraction is:
In Fraunhofer diffraction,light of wavelength $6328 \ \mathring{A}$ is incident perpendicularly on a slit of width $0.2 \ mm$. The angular width of the secondary maxima or minima will be: (in $^{\circ}$)
Medium
View SolutionEstimate the distance for which ray optics is a good approximation for an aperture of $4 \; mm$ and wavelength $400 \; nm$.
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