Kids in elementary school get this right: Which color of light gets through red glass?
A) red
B) cyan
C) none of these
Answer: A
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Briefly explain spectrographs, and describe the experiment that led Isaac Newton to conclude that white light is made of a mixture of colors
What will be an ideal response?
In common transparent media, as the frequency of light increases, the index of refraction
A) increases. B) stays constant. C) decreases. D) varies as the sine of the incident angle.
An object is thrown vertically and has an upward velocity of 18 m/s when it reaches one fourth of its maximum height above its launch point. What is the initial (launch) speed of the object?
a. 35 m/s b. 25 m/s c. 30 m/s d. 21 m/s e. 17 m/s
When one observes a scratch on the bottom of a block of clear plastic, the scratch appears to be 2.5 cm below the top surface as viewed from above. The actual thickness of the plastic block is 3.0 cm. The index of refraction of the block is ________.
Fill in the blank(s) with the appropriate word(s).