7. A light beam (of white light) is incident on a (45°-45°-90°) wedge of glass (shown below) with the beam parallel to the base of the wedge. The beam strikes the wedge midway along the sloping side, as shown below. The index of refraction for red light is 1.51 and the index of refraction for blue light is 1.53. If a screen is placed 1 m from the wedge, how large does the resulting spectrum appear? Assume the wedge is so small that the two beams emerge from the same point. Screen 1m-
7. A light beam (of white light) is incident on a (45°-45°-90°) wedge of glass (shown below) with the beam parallel to the base of the wedge. The beam strikes the wedge midway along the sloping side, as shown below. The index of refraction for red light is 1.51 and the index of refraction for blue light is 1.53. If a screen is placed 1 m from the wedge, how large does the resulting spectrum appear? Assume the wedge is so small that the two beams emerge from the same point. Screen 1m-
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Geometric optics q 7
Transcribed Image Text:001241222212/pdf2htmlex/index.html#page_67
10 cm
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Water
7. A light beam (of white light) is incident on a (45°-45°-90°) wedge
of glass (shown below) with the beam parallel to the base of the
wedge. The beam strikes the wedge midway along the sloping
side, as shown below. The index of refraction for red light is 1.51
and the index of refraction for blue light is 1.53. If a screen is
placed 1 m from the wedge, how large does the resulting spectrum
appear?
emerge from the same point.
Assume the wedge is so small that the two beams
Screen
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