The Doppler effect due to motion of excited atoms in a glowing gas tends to make the spectral lines slightly
A) thicker.
B) thinner.
C) more numerous.
D) none of the above
Answer: A
Physics & Space Science
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What will be an ideal response?
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A student constructs an astronomical telescope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resulting length of the telescope?
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