EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Textbook Question
Chapter 33, Problem 1Q
Where must the film be placed if a camera lens is to make a sharp image of an object far away?
Expert Solution & Answer
To determine
The position of the screen to obtain a sharp image of the far away object through a camera lens.
Answer to Problem 1Q
The screen should be placed behind the lens at the focus of the lens to obtain a sharp image of the far away object.
Explanation of Solution
The object kept far away from a lens means that it is at infinite distance from the lens or very far way. For such objects that are kept at a distance, the rays are considered to be travelling parallel to the axis of the lens.
For a lens either converging or diverging, the rays travelling parallel to the principal axis, get focused at the focus of the lens. A camera uses a converging lens and therefore, it converges the rays coming from a far object to the focus on the other side of the lens.
Therefore, in order to obtain a clear and sharp image of a far object, the screen should be placed at the focus of the lens on the other side of the lens or behind the lens.
Conclusion:
Thus, the screen should be placed behind the lens at the focus of the lens to obtain a sharp image of the far away object.
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Chapter 33 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 33 - Where must the film be placed if a camera lens is...Ch. 33 - A photographer moves closer to his subject and...Ch. 33 - Use ray diagrams to show that a real image formed...Ch. 33 - Light rays are said to be reversible. Is this...Ch. 33 - A cat with its tail in the air stands facing a...Ch. 33 - An underwater lens consists of a carefully shaped...Ch. 33 - (III) A bright object is placed on one side of a...Ch. 33 - (II) A diverging lens with a focal length of 14 cm...Ch. 33 - (II) Suppose that a correct exposure is 1250S at f...Ch. 33 - (I) A human eyeball is about 2.0 cm long and the...
Ch. 33 - (II) Reading glasses of what power are needed for...Ch. 33 - (II) The closely packed cones in the fovea of the...Ch. 33 - (II) Sherlock Holmes is using an...Ch. 33 - (II) A converging lens of focal length = 12 cm is...Ch. 33 - (III) Given two 12-cm-focal-length lenses, you...Ch. 33 - A small object is 25.0 cm from a diverging lens as...Ch. 33 - Two converging lenses are placed 30.0 cm apart....
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