Question

The intensity of spectral lines ...... in different parts of the flame.
(a) varies
(b) remains same
(c) changes
(d) remain unchanged.​

Answer 1

Answer:

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Explanation:

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Answer 2

The correct answer is option (a) varies.

Explanation:

• Each element of spectral lines has a different set of permissible orbits, so each element emits or absorbs photons with dissimilar energies -- and so, with different wavelengths.
• The intensity of a spectral line at a specified frequency is associated with the net rate of emission or absorption at that frequency.
• Intensity of spectral lines depends on the wavelength which has an inverse relation with the frequency of that particular spectral line.
• So, the correct answer is that The intensity of spectral lines varies in different parts of the flame.