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Why is the solar spectrum an absorption spectrum rather than an emission spectrum?
The sun has 3 layers - the photosphere, the chromosphere, the corona. Photosphere is the visible surface and gives the absorption spectrum. Chromosphere is the pinkish discharge encircling the Sun, visible only during a total eclipse. This gives the emission spectrum. Corona is the halo encircling the chromosphere. THis gives the coronal spectrum.
Is sodium lamp a monochromatic source?
sodium light is not monochromatic but we consider it because sodium light is made up of two wavelengths i.e dichromatic having little difference in their values (5890 and 5896 A) n we take their mean value (5893 A)...........
If you replace mercury light with sodium vapour lamp in spectrometer experiment what colors do you observe in the spectrum?
If you replace a mercury light with a sodium vapor lamp in a spectrometer experiment, you would observe only a few specific colors in the spectrum. These colors would correspond to the characteristic emission lines of sodium, such as the bright yellow spectral lines at 589.0 nm and 589.6 nm. Sodium vapor lamps emit light predominantly in the yellow region of the spectrum.
What happens if you use a mercury source instead of sodium vapour lamp in diffraction grating experiment?
sodium vapour lamps produce much higher light output (about 90 lumens/watt) they cannot be used in lighting applications where colour-rendering property is very crucial. This is because most of the light emitted from a sodium vapour lamp is concentrated in the yellow part of the visible spectrum (around 580-590 nm) On the other hand, a mercury vapour lamp is quite suitable for lighting applications. This is because, the mercury vapour lamp can feed almost the entire visible region (380-780 nm) of the human visual system.
Why does sodium burn yellow?
When sodium burns, it emits a yellow light due to the specific wavelengths of light that are produced during the process. The excitation of sodium atoms during combustion causes them to release energy in the form of visible light, which happens to be in the yellow part of the spectrum. This emission of light is characteristic of the sodium element.
Is sodium lamp a monochromatic lamp?
No, a sodium lamp is not a monochromatic lamp. It emits light in a narrow range of wavelengths, primarily the yellow-orange region of the spectrum, but it is not strictly monochromatic as it produces a broader spectrum of light compared to a true monochromatic source.
What would happen if the light from a star passes through a cool cloud of sodium gas?
The cool cloud of sodium gas would absorb specific wavelengths of light known as the sodium D lines. This absorption pattern would result in dark absorption lines superimposed on the star's spectrum, allowing astronomers to identify the presence of sodium in the gas cloud.
What do you get when you mix sodium chloride with Mercury?
Mercury will not react with sodium chloride
In what region of visible range does the emission spectrum of sodium lie?
The emission of sodium lies in the yellow region
Why you use mercury lamp instead of ordinary light or sodium lamp in constant deviation?
Mercury lamps are chosen for constant deviation spectrophotometry because they emit strong lines at characteristic wavelengths, making them suitable for calibration purposes. The narrow spectral lines produced by mercury lamps help in accurately determining the deviation and dispersion properties of the spectrometer. Sodium lamps, on the other hand, have broader emission lines which can affect the precision of the measurements in constant deviation spectrophotometry.
In pure yellow light provided by a Low pressure sodium lamp why do some colors remain and others turn different shades of Yellow?
Low pressure sodium lamps emit a specific wavelength of yellow light. Objects that reflect or absorb other wavelengths of light will appear as different shades of yellow under this light source. Colors that do not have any yellow component in their spectrum may appear different shades of gray or black.
What is the definition of sodium amalgam?
Sodium amalgam is a compound formed by the reaction of sodium with mercury, resulting in a homogeneous mixture. It is used in organic chemistry as a reducing agent and in organic synthesis reactions. However, it is highly reactive and toxic due to the presence of mercury.
