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D3 line was observed along with D, and D...

`D_3` line was observed along with D, and D in the solar spectrum. This denotes the presence of

A

helium in chromosphere of sun

B

neon in chromosphere of sun

C

arson in chromosphere of sun

D

xenon in chromosphere of sun

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The correct Answer is:
To solve the question regarding the observation of the D3 line along with D and D in the solar spectrum, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Question**: The question states that the D3 line is observed along with D and D in the solar spectrum. We need to identify which noble gas is indicated by the presence of the D3 line. 2. **Identifying the D Lines**: The D lines refer to specific spectral lines in the solar spectrum. The D3 line is associated with certain elements, particularly noble gases. 3. **Analyzing the Options**: The options provided are: - Helium - Neon - Argon - Xenon 4. **Recalling Spectral Lines**: It is known that the D3 line is specifically linked to the presence of helium. This was historically significant as it was one of the first indications of helium's existence on Earth, discovered through its spectral lines in the sun. 5. **Conclusion**: Since the D3 line is associated with helium, we conclude that the presence of the D3 line in the solar spectrum denotes the presence of helium in the chromosphere of the sun. ### Final Answer: The presence of the D3 line in the solar spectrum denotes the presence of **helium** in the chromosphere of the sun. ---
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