(B) Fraunhofer lines are dark absorption lines observed in the solar spectrum. These lines are formed because the cooler gases in the Sun's chromosphe

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Absorption of certain wavelengths in the chromosphere of the Sun.

(B) Fraunhofer lines are dark absorption lines observed in the solar spectrum. These lines are formed because the cooler gases in the Sun's chromosphere absorb specific wavelengths of light emitted by the hotter photosphere beneath it. Therefore,they indicate the absorption of certain wavelengths by the elements present in the Sun's chromosphere.

Class 12 Physics Wave Optics Fresnel distance, Diffraction through circular slit, concept of Airy Disc, Rayleigh Criterion of Resolution , Fraunhofer diffraction

Easy

What do the Fraunhofer lines in the solar spectrum indicate?

A
Absorption of certain wavelengths in the photosphere of the Sun.
B
Absorption of certain wavelengths in the chromosphere of the Sun.
C
The Sun does not emit all wavelengths.
D
Nuclear reactions occurring in the Sun.

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Class 12

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Wave Optics

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Fresnel distance, Diffraction through circular slit, concept of Airy Disc, Rayleigh Criterion of Resolution , Fraunhofer diffraction

Fresnel diffraction is produced due to light rays falling on a small obstacle. The intensity of light at a point on a screen beyond an obstacle depends on

MediumAP EAMCET 2013

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For what distance is ray optics a good approximation when the aperture is $3\; mm$ wide and the wavelength is $500\; nm$?

Easy

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In Fraunhofer diffraction,draw the graph of the intensity of light on the screen versus the diffraction angle $\theta$ and write its characteristics.

Medium

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For what distance is ray optics a good approximation when the aperture is $ 4 \,mm $ and the wavelength of light is $ 400 \,nm $ (in $\,m$)?

MediumKCET 2016

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$A$ plane wavefront of wavelength $6000 \, \mathring A$ is incident on a slit of width $0.2 \, mm$. $A$ Fraunhofer diffraction pattern is obtained on a screen at a distance of $2 \, m$ from the slit. What is the width of the central maximum in $mm$?

Medium

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What do the Fraunhofer lines in the solar spectrum indicate?

Similar Questions

Fresnel diffraction is produced due to light rays falling on a small obstacle. The intensity of light at a point on a screen beyond an obstacle depends on

For what distance is ray optics a good approximation when the aperture is $3\; mm$ wide and the wavelength is $500\; nm$?

In Fraunhofer diffraction,draw the graph of the intensity of light on the screen versus the diffraction angle $\theta$ and write its characteristics.

For what distance is ray optics a good approximation when the aperture is $ 4 \,mm $ and the wavelength of light is $ 400 \,nm $ (in $\,m$)?

$A$ plane wavefront of wavelength $6000 \, \mathring A$ is incident on a slit of width $0.2 \, mm$. $A$ Fraunhofer diffraction pattern is obtained on a screen at a distance of $2 \, m$ from the slit. What is the width of the central maximum in $mm$?

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