The block lines in the solar spectrum during solar eclipse can be explained by

Plank's law

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Kirchoff's law

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Boltzmann's law

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Solar disturbances

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Solution

The correct option is B Kirchoff's law
Kirchhoff's Law states that the ratio of the emissive power to absorptive power for the radiation of a given wavelength is same for all substances at the same temperature. This explains the astronomical behaviour in a solar spectrum where a number of dark lines called Fraunhoffer lines are observed.But during solar ecllpse, same bright lines are observed as that of Fraunhoffer dark lines.

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