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Question

Sunspots on the photosphere are due to.

A
Eclipses caused by planets
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B
Comparatively cooler regions
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C
Granulation's
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D
Cloudy weather on the earth
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Solution

The correct option is B Comparatively cooler regions
Sunspots are temporary phenomenon on the sun photosphere that appears as spots darker than the surrounding area.
They are regions of reduced surface temperature.
Answer is B

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