Problem

Read the paragraph and then answer the following question:The Hubble Space Telescope (HST)...

Read the paragraph and then answer the following question:

The Hubble Space Telescope (HST) is the largest tele­scope ever placed into orbit. Its primary concave mirror has a diameter of 2.4 m and a focal length of approximately 13 m. In addition to having optical detectors, the telescope is equipped to detect ultraviolet light, which does not easily penetrate Earth’s atmosphere.

Which of the following is the best explanation of why ultraviolet light does not penetrate Earth’s atmosphere as easily as visible light does?

A.      Ultraviolet light has a shorter wavelength and is more readily absorbed by the atmosphere.


B.      Ultraviolet light has a lower frequency and is more readily absorbed by the atmosphere.


C.      Ultraviolet light contains less energy and cannot travel as far through the atmosphere.


D.      Ultraviolet light undergoes destructive interference as it travels through the atmosphere.

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