Question

Fraunhofer lines are obtained in:

• A. Solar spectrum
• B. The spectrum obtained from the neon lamp
• C. Spectrum from a discharge tube
• D. None of the above

Answer 1

The correct option is A

Solar spectrum

Correct option: Option A

1. Fraunhofer lines are the dark lines (absorption lines) that are found in the spectrum of the sun or other stars.
2. These are caused by the selective absorption of the sun's radiations at specific wavelengths by various elements, such as gases that exist in its atmosphere.
3. So, the Fraunhofer lines are obtained in the solar spectrum.

Fraunhofer lines in the solar spectrum

Incorrect Options:

Option B

A neon lamp produces a discrete spectrum there are no black lines obtained from it. So, this option is incorrect.

Option C

A line of spectra containing hydrogen gas is obtained from the discharge tube. It does not have any Fraunhofer lines. So, this option is incorrect.

Option D

Since option A is correct, this option is incorrect.

Hence, option A is correct.