. Assume that a camera has a bi-convex lens. Should you move the lens toward or away from the sensor in order to zoom in (magnify)? 2. A camera has a bi-convex lens whose focal length is 50mm. The lens’s range of motion is 5.56mm starting from 50mm from the sensor and moving away. What are the minimum and maximum possible object positions for which the image is in focus? 3. For the camera in the previous question, when a 300mm tall object is at the minimum distance, will it fit on a Canon APS-C sensor? Hint: Look up the size of this camera sensor.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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1. Assume that a camera has a bi-convex lens. Should you move the lens toward or

away from the sensor in order to zoom in (magnify)?

2. A camera has a bi-convex lens whose focal length is 50mm. The lens’s range of

motion is 5.56mm starting from 50mm from the sensor and moving away. What

are the minimum and maximum possible object positions for which the image is in

focus?

3. For the camera in the previous question, when a 300mm tall object is at the minimum

distance, will it fit on a Canon APS-C sensor? Hint: Look up the size of this camera

sensor.

4. See Figure 10.7! A circular piece of glass (n=1.5) has been cut in half as shown

and is being used as a lens for a set of five parallel rays. The angles at which

the rays are incident on the circular side of the lens are shown, and the image is

drawn to scale. First, calculate the 5 angles of refraction for each of the 5 angles

of incidence, respectively. Second, use a protractor to draw the refracted rays such

that they intersect the dashed line. Finally, comment on whether a circular piece of

glass makes a good lens or not.

5. Based on the drawing and calculations you did in Question 4, how would the focal

length of a lens change if it was submerged in water (n=1.33)?

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