Week 4 Webworks

# Week 4 Webworks - A convex lens has both sides rounded...

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Webworks Week 4 1. 1/object + 1/image = 1/focal object = 10.2-m image = 10.3-cm = 0.103-m 1/(10.2) + 1/(0.103) = 1/f f = 0.10197-m, but they want it in cm, so f = 10.197-cm % discrepancy = (Theory – Actual)/Theory X 100 % discrepancy = (0.103 – 0.10197)/(0.103) X 100 % discrepancy = 0.999% 2. 1/image = 1/focal – 1/object focal = 11-cm object = 21-cm 1/image = 1/(11) – 1/(21) image ( i ) = 23.1-cm magnification ( m ) = - image/object m = - (23.1)/(21) m = - 1.1 3. “inverted” an image is inverted if m < 0 4. “real” an image is real if “ o ”, “ i ,” f > 0 5. o 1 = 17-cm i 1 = 36-cm f 2 = 8-cm m = (71)/4.5 = 15.78 m = ( i 1 L ) / ( o 1 f 2 ) L = ( mo 1 f 2 )/ i 1 L = (15.78)(17)(8)/(36) L = 59.6-cm 6.
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Unformatted text preview: A convex lens has both sides rounded outward causing the light rays to converge towards one another. A concave lens has both sided rounded inward, causing the light rays to diverge away from one another 7. Air cornea interface the indices differ the most by 0.38 8. the lens 9. The cornea is flatter at its margin than at its center and the lens is denser in the center and hence refracts more strongly at its core than at its outer layers. 10. The lens can sharpen the curvature of its front and back surfaces, increasing its focusing power....
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