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標題:
Physic total internal reflection
發問:
Questions: A student uses two prisms to construct a periscope as shown above. Which of the following shows the image of the object as seen by the observer? picture:http://xs.to/xs.php?h=xs126&d=08142&f=diagram868.png 更新: A light ray passes from air into water (refractive index 1.33). What is the angle between the reflected ray and refracted ray? picture: http://npaw.learnmore.com.hk/OUP/Npaw/Paper/npaw9-21/images/09-13/ch12eq06.jpg 更新 2: http://xs.to/xs.php?h=xs126&d=08142&f=diagram868.png I can open it 更新 3: or try this http://xs126.xs.to/xs126/08142/diagram868.png
最佳解答:
For 1, I cannot get the image through the web link provided. Could you please update the link? For 2 Let r be the refracted angle. Incident angle = 90-70 =20 sin20/sin r = 1.33 sin r = sin20/1.33 r = 14.9 Angle of reflection = incident angle = 20 The required angle = 180 - 20 -14.9 = 145.1 2008-04-03 19:02:38 補充： From the graph attacted, We can see the ray from the arrow tip reach the upper part of the eye The ans is B. 2008-04-03 19:05:04 補充： http://hk.geocities.com/kwokon34/ans2.PNG It should be the correct one. Please be reminded that the pic. should be enlarged before you read it.
其他解答:6A560DB68EC65D60
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