COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 24, Problem 34QAP
To determine
How tall will the image of the man be
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If a concave mirror produces a real image, is the imagenecessarily inverted? Explain.
Obtaining a large spherical mirror with a focal length of 0.654 m from the Physics Storeroom, Mr. H takes his last period class outside for a fascinating demo. A student volunteer holds the mirror at an angle such that the face of the mirror is directed towards the Sun - roughly 1.46x1011 m away. Mr. H then uses a piece of paper with George Washington's picture on it to focus the image of the sun on the sheet of paper. Before the paper engulfs in flames, a bright image of the sun can be seen on the paper. Use the mirror equation to calculate the distance from the mirror to the image of the sun.
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Chapter 24 Solutions
COLLEGE PHYSICS
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- A magnifying glass produces an angular magnification of 4.5 when used by a young person with a near point of 18 cm. What is the maximum angular magnification obtained by an older person with a near point of 45 cm?arrow_forwardCan an image be larger than the object even though its magnification is negative? Explain.arrow_forwardSuppose a man stands in front of a mirror as shown in Figure 25.50. His eyes are 1.65 m above the floor, and the top of his head is 0.13 m higher. Find the height above the floor of the top and bottom of the smallest mirror in which he can see both the top of his head and his feet. How is this distance related to the man’s height? Figure 25.50 A full-length mirror is one in which you can see all of yourself. It need not be as big as you, and its size is independent of your distance from it.arrow_forward
- What is the focal length of a makeup mirror that produces a magnification of 1.50 when a person’s face is 12.0 cm away? Explicitly show how you follow the steps in the Problem-Solving Strategy: Spherical Mirrors.arrow_forwardExplain why an oar that is partially submerged in water appears bent.arrow_forwardIf the cornea is to be reshaped (this can be done surgically or with contact lenses) to correct myopia, should its curvature be made greater or smaller? Explain.arrow_forward
- A borosilicate crown glass sphere (n= 1.5) of radius 4 cm is surrounded by ethyl alcohol(n= 1.4). An ant drifting in the alcohol is6cmfrom the sphere is center; describe its image.arrow_forwardImagine that you travel by car on the General Cañas highway, towards San José-Alajuela and the car turns right towards the entrance of Barreal. When you get to the top, in front of you there is a convex mirror on a pole so that you can see the cars coming towards you from the left. The mirror has a radius of curvature of 427.2 mm and the car is positioned 7.5 m away from the mirror, how to calculate the mirror distance - an image that is formed due to the reflection of the car in which you are traveling.arrow_forwardHow far from a concave mirror (radius 25.0 cm ) must an object be placed if its image is to be at infinity? Express your answer to three significant figures and include the appropriate units.arrow_forward
- A mirror at an amusement park shows an uprightimage of any person who stands 1.9 m in front of it. If theimage is three times the person’s height, what is the radiusof curvature of the mirror? (See Fig. 23–50.)arrow_forwardPhysics An object 1.1 cm high is viewed under a magnifier of focal length 9.0 cm by a person with a near point of 28 cm and a far point of ∞. (a) Find the angle subtended by the image formed by the magnifier when the eye is relaxed. (b) Find the angle subtended by the image formed by the magnifier when the eye is focused at its near pointarrow_forwardA virtual image, we always say, cannot be caught on a screen. Yet when we ‘see’ a virtual image, we are obviously bringing it on to the ‘screen’ (i.e., the retina) of our eye. Is there a contradiction?arrow_forward
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