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Chapter 32: Problem 6
What is the magnification for a plane mirror? a) +1 c) greater than +1 b) -1 d) not defined for a plane mirror
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If you look at an object at the bottom of a pool, the pool looks less deep than it actually is. a) From what you have learned, calculate how deep a pool seems to be if it is actually 4 feet deep and you look directly down on it. The refractive index of water is \(1.33 .\) b) Would the pool look more or less deep if you look at it from an angle other than vertical? Answer this qualitatively, without using an equation.
A person sits \(1.0 \mathrm{~m}\) in front of a plane mirror. What is the location of the image?
A light ray is incident from water of index of refraction 1.33 on a plate of glass whose index of refraction is 1.73. What is the angle of incidence, to have fully polarized reflected light?
The shape of an elliptical mirror is described by the curve \(\frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}=1,\) with semi major axis \(a\) and semi minor axis \(b\). The foci of this ellipse are at points \((c, 0)\) and \((-c, 0)\) with \(c=\left(a^{2}-b^{2}\right)^{1 / 2}\). Show that any light ray in the \(x y\) -plane, which passes through one focus, is reflected through the other. "Whispering galleries" make use of this phenomenon with sound waves.
Many fiber-optics devices have minimum specified bending angles. Why?
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