Chapter 32: Problem 27
A person sits \(1.00 \mathrm{~m}\) in front of a plane mirror. What is the location of the image?
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A small object is placed in front of a converging mirror with radius \(R=7.50 \mathrm{~cm}\) so that the image distance equals the object distance. How far is this object from the mirror? a) \(2.50 \mathrm{~cm}\) b) \(5.00 \mathrm{~cm}\) c) \(7.50 \mathrm{~cm}\) d) \(10.0 \mathrm{~cm}\) e) \(15.0 \mathrm{~cm}\)
What is the speed of light in crown glass, whose index of refraction is \(1.52 ?\)
A physics student is eying a steel drum, the top part of which has the approximate shape of a concave spherical surface. The surface is sufficiently polished that the student can just make out the reflection of her finger when she places it above the drum. As she slowly moves her finger toward the surface and then away from it, you ask her what she is doing. She replies that she is estimating the radius of curvature of the drum. How can she do that?
Use Fermat's Principle to derive the law of reflection.
Where do you have to place an object in front of a concave mirror with focal length \(f\) for the image to be the same size as the object? a) at \(d_{\mathrm{o}}=0.5 f\) b) at \(d_{\mathrm{o}}=f\) c) at \(d_{\mathrm{o}}=2 f\) d) at \(d_{\mathrm{o}}=2.5 f\) e) none of the above
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