Latest QuestionsCategory: Physics
Spectral lines are often referred to as the stars’ “fingerprints” because: A) fi
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Osmotic pressure =Hydrostatic pressure?in case of u shaped tube
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What information about an astronomical object can be determined by observing its
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If the rest wavelength of a certain line is 600 nm., but we observe it at 594 nm
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According to the Zeeman effect, the splitting of a sunspot’s spectral lines is d
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The broadening of spectral lines can be caused by: A) density of the hot medium.
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The observed spectral lines of a star are all shifted towards the red end of the
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If a source of light is approaching us at 3,000 km/sec, then all its waves are A
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The splitting of spectral lines in the presence of strong magnetic fields is the
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Since the difference in energy between the different rotational states in a mole
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Why are molecular lines more complex than elemental spectral lines? A) Molecules
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In a hydrogen atom, a transition from the third to the second energy level will
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For hydrogen, the transition from the second to the fourth energy level produces
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To have a negative ion, you must have: A) taken away a proton from the nucleus.
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Emission lines of hydrogen that are found in the ultraviolet part of the electro
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