Multiple Choice: 4 Points Each Any answers NOT recorded on the Scantron answer p
ID: 1795339 • Letter: M
Question
Multiple Choice: 4 Points Each Any answers NOT recorded on the Scantron answer page will NOT be coun v ed 9. The lens in the diagram will cause parallel rays of light incident on it to A) diverge appearing to have come from a focal point B) converge to a focus C) It depends on whether the light is incident on the lens from the left or right. D) None of the above. 10. A light ray travels from medium 1 to medium 2 to medium 3 as shown to the right. For these media: n3 ni 30° 40° B) rs > n! 50° D) Cannot compare ni and ns without knowing n2. 11. Which of these forms of electromagnetic radiation carries the least energy? C) microwaves D) radio waves E) ultraviolet F) visible light 12. Which of these forms of electromagnetic radiation has the highest frequeney? F) visible light A) gamma rays B) infrared C) microwaves D) radio waves E) ultraviolet 13. Which of the following wavelengths of light is not visible to the average human eye? E) 635 nm A) 250 B)400 nm C)475 nm D) 544 nm would likely correspond to visible light that is orange? A) B) C) D)E) F) G) 14. Which of the rays labeled in the diagram to the right A FExplanation / Answer
9. if the lens is a conves lens, it will diverge the incoming parallel rays
if it is concave, it will converfe the incoming parallel rays
10. when light is travelling from medium 1 to medium 2, if it refracts away form the normal, then the index of refraction of medium 2 is lower than index of refraction of medium 1 and vice versa
hence from the given diagram
n1 > n2
n2 > n3
hence
n1 > n2 > n3
hence optiono C) n3 < n1
11. energy carried by EM wave is inversly proportional to the wavelength
now, in the given options
radio waves have the largest wavelength, so they carry least energy
hence option D)
12. gamma rays have higher frequency, even higher than ultraviolet rays
hence
optoin A)
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