Solutions to Physics 1230 Homework: Optics Problems, Assignments of Physics

Download Solutions to Physics 1230 Homework: Optics Problems and more Assignments Physics in PDF only on Docsity! Solutions to Phys 1230 homework problem set #2 Assignment: Problems P12 & P17 (Textbook page 25, in the end of chapter #1), Problems P7, P8, & PH2 (Textbook pages 69 & 70, in the end of chapter #2) Problem P12 (textbook page 25) Problem P17 (textbook page 25) A visible wave has a higher frequency; the radio wave has a longer wavelength; the radio wave has the longer period; visible wave both and radio wave have the same speed in vacuum. Problem P7 (Textbook page 69, in the end of chapter #2). The size of each image can be found by drawing straight lines passing through the pinhole from the tip of each arrow to the screen. This method shows that the smaller arrow labeled “b” actually has the larger image on the screen. Although arrow “b” is smaller than arrow “a” it is much closer to the pinhole, and that more than compensates for its smaller size. The geometrical construction also shows that the image is inverted relative to the object, so that the image of arrow “b” will be pointing up. Thus arrow “b” is the answer to both parts of the question. Problems P8 (Textbook page 69, in the end of chapter #2) Only a small fraction of the light coming from the Sun can get through the pinhole, only a fraction of that fraction is reflected from the white screen and only a fraction of that fraction reaches your eyes. The light that actually reaches your eyes in this configuration is therefore far less than what your eye would receive if it looked directly at the Sun.