Determine the type of emission spectra (e.g, line, band, or continues) in each t

Question

Determine the type of emission spectra (e.g, line, band, or continues) in each type of lamp: 1) Fluorescent Lamp 2) Helium Lamp 3) Neon Lamp 4) Hydrogen Lamp 5) Mercury Lamp
Please explain your answer if you could Determine the type of emission spectra (e.g, line, band, or continues) in each type of lamp: 1) Fluorescent Lamp 2) Helium Lamp 3) Neon Lamp 4) Hydrogen Lamp 5) Mercury Lamp
Please explain your answer if you could 1) Fluorescent Lamp 2) Helium Lamp 3) Neon Lamp 4) Hydrogen Lamp 5) Mercury Lamp
Please explain your answer if you could

Explanation / Answer

Emission spectra is a bright spectrum on dark background. It is of three types. They are:
a) Continuous emission spectrum: this spectrum consists of a wide range of unrepeated wavelengths (colours) in a definite wavelength range. The continuous emission spectrum is obtained by incandenscent solids (white hot solids), dense hot gases, liquid in bulk state. It does not depends on substance but depends on temperature of the substance only. The spectra obtained from luminous body like tungsten filament, burning coal, red hot metals, burning candles, stars and the sun are continuous emission spectra.
b) Line emission spectra: This spectrum consists of sharp lines of definite wavelengths (colours). The line emission spectra is produced by excited substance in atomic state as sodium vapour lamp, gases in discharge tube, mercury vapour lamp, luminous helium, argon, neon.
c) Band emission spectra: This spectrum consists of distinct bright bands of different wave lengths each having sharp edges. Incandescent vapours in molecular state. Calcium or barium salts in the Bunsen burner flame, nitrogen in molecular state in vacuum tubes give band emission spectra.

1) The spectrum of a fluorescent lamp has bright lines and a continuous spectrum. The bright lines come from mercury gas inside the tube while the continuous spectrum comes from the phosphor coating lining the interior of the tube.

2) Helium (He) is the chemical element with atomic number 2 .Helium is a colorless, odorless, inert and a monoatomic gas. Helium first detected in yellow spectrum line of sunlight during a solar eclipse in 1868. The emission spectra of helium in an electric discharge are an example of line spectra.

3) The emission spectra of Neon in an electric discharge are an example of line spectra.

4) Hydrogen atom forms line spectrum. When hydrogen gas filled in a discharged tube and applies electric voltage, it gets atomized. Due to the formation of hydrogen atom, some pink color light produced in visible region. When this light analyses through spectroscope, we will get line spectrum of hydrogen.

5) Mercury lamp is an example of line emission spectrum.

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