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Bogdan [553]
3 years ago
6

QUESTION 13

Physics
1 answer:
inna [77]3 years ago
8 0
The answer is d.heuristic
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<u><em>Definition of spectral line: </em></u><em>one of a series of linear images formed by a spectrograph or similar instrument and corresponding to a narrow portion of the spectrum of the radiation emitted or absorbed by a particular source.</em>

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<u><em>Definition of Wavelength:</em></u><em> can be defined as the distance between two successive crests or troughs of a wave. It is measured in the direction of the wave. ... Wavelength is inversely proportional to frequency. This means the longer the wavelength, lower the frequency.</em>

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Explanation:

I hope this helps!

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I need plz some on help me
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