T F When a wave reaches a boundary between two media and some or all of the wave
ID: 1444251 • Letter: T
Question
T F When a wave reaches a boundary between two media and some or all of the wave bounces back into the first medium, this is known as reflection. 2. T F Your eye cannot ordinarily tell the difference between an object and its virtual image. 3. T F When light waves move from one medium into a medium in which they travel more slowly, the light wave is bent away from the normal. T F diffraction. of light into colors arranged according to their frequency is called The separation 5. T F A camera forms a virtual image on film. 6. T F The layer of tissue at the back of the eye is the iris 7. T F In a far-sighted eye, light focuses in front of the retina. 8. T F The bending of a wave around an obstruction is called refraction. 9. T F When the crest of one wave overlaps the crest of another wave, the result is destructive interference. 10. T F Alaser beam is said to be incoherent because there is no interference of waves within the beam. Answer the following questions by writing on the blank lines the letter(s) of the word or phrase that best statement or answers the question. Choose only one answer unless a particular question indicates otherwise. When a wave traveling from one medium is partially reflected at the border of another medium, (A) part of its energy is lost and the rest is reflected back into the original medium (B) all of its energy continues on into the new medium (C) all of its energy is reflected back into the original medium (D) part of its energy continues into the second medium and part of its energy is reflected back into the original medium.Explanation / Answer
1) T
2) T
3) F
4) F
5) T
6) T
7) F
8) F
9) F
10) T
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