The white light source in this demonstration emits light because the electrons in its filament get...
The white light source in this demonstration emits light because the electrons in its filament get so hot that they vibrate rapidly enough to emit radiation in the visible range. Briefly explain why this produces light that is so different from the light of the hydrogen lamp
Homework Answers
In hydrogen lamp, the emitted photon have only some particular value of energy because the energy levels of hydrogen atoms are quantised and have only a number of energy levels. Electrons in hydrogen lamp emit only these photons.
On the other hand, in case of filament, there are a large number of atoms present and they have various energy levels. So,when electrons emit photon, the energy of these photons and thus their wavelength are wide ranged. They emit photons of every wavelength in entire visible range and thus the light emitted is white.
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The white light source in this demonstration emits light
because the electrons in its filament get...
1I11.7.(a) What, in percent, is the typical light emission efficiency of a conventional tungsten-filament light bu...
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3. Besides H, list other hydrogen like species in which the Rydberg constant in eq. 3...
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question 7 and 8
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1I11.7.(a) What, in percent, is the typical light emission efficiency of a conventional tungsten-filament light bu (Hint: it is quite low.) (b) Explain why it is so low, with the help of an illustration: Sketch, approximately to scale the spectrum) of radiation emitted by such a light bulb. In it, draw vertical lines (or arrows) indicating the range of visible wavelengths. (c) For comparison draw, in the same axes, (i) the typical spectrum emitted by a white LED lamp and...
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verify 1-2-3-4-5-6 and do 7 please
1. It is hard to get the bars to be parallel in this experiment. Explain why the bars tend to be so wiggly That happens because there is not match friction between the glass plates and it makes it hard to move them gradually relatively to each other, plus the surfaces of the glass plates are not entirely even which makes the friction vary in different areas of the glass plates and their movement...
3. Besides H, list other hydrogen like species in which the Rydberg constant in eq. 3 would still be 1.10 x 10"? 4. Is a Het 5-3 transition in the visible range? Calculate and explain. 5. Are there any electronic transitions of Het involving energy levels 1, 2 and 3 which are in the visible range? That is, will He emit any visible photons when the electrons fall from any level to levels 1, 2, and 3? If not, show...
question 7 and 8
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choose correct answer. no explanation needed
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