Emission spectrum shows the wavelengths of light that an atom gives off when an electron falls to a lower energy level. Hence, Option C is the correct answer.
The wavelength of light is defined as “The distance between the two successive crests or troughs of the light wave”.
Light is absorbed or emitted when an electron jumps or falls into an energy level.
The energy of light absorbed or emitted is equal to the difference between the energy of the orbits.
Therefore , the wavelengths of light that an atom gives off when an electron falls to a lower energy level corresponds to Emission spectrum.
Hence , Option C is the correct answer.
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