Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Question
Chapter 41, Problem 1PLA
To determine
Whether the following statements about lenses are true or false and mark them.
Expert Solution & Answer
Answer to Problem 1PLA
Statement a: False
Statement b: False
Statement c: False
Statement d: False
Explanation of Solution
There are mainly two types of lens, converging lens and diverging lens.
The rays brought together to a point called focal length when a light beam of parallel rays incident on a converging lens. The focal point of the converging lens is always positive.
The rays diverges when a light beam of parallel rays incident on a diverging lens. The focal point of the diverging lens is always negative.
Conclusion:
- (a) The parallel rays converge upon incident on a converging lens and its focal point is positive. Thus, statement (a) is false.
- (b) When the path of the diverging light rays is traced backwards, they appear to come from a point called focal point. Thus, statement (b) is false.
- (c) A double convex lens does not have a negative focal length. Thus, statement (c) is false.
- (d) The focal point of the converging lens is always positive and the focal point of the diverging lens is always negative. Therefore, statement (d) is false.
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Chapter 41 Solutions
Physics Laboratory Manual
Ch. 41 - Prob. 1PLACh. 41 - A double convex lens is made from glass with an...Ch. 41 - Prob. 3PLACh. 41 - For a diverging lens, state what kinds of images...Ch. 41 - For a converging lens, state what kinds of images...Ch. 41 - A lens has a focal length of f = +10.0 cm. If an...Ch. 41 - An object is 16.0 cm from a lens. A real image is...Ch. 41 - One lens has a focal length of +15.0 cm. A second...Ch. 41 - Two lenses are in contact. One of the lenses has a...
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- What are the differences between real and virtual images? How can you tell (by looking) whether an image formed by a single lens or mirror is real or virtual?arrow_forwardThe use of a lens in a certain situation is described by the equation 1p+13.50p=17.50cm Determine (a) the object distance and (b) the image distance. (c) Use a ray diagram to obtain a description of the image. (d) Identify a practical device described by the given equation and write the statement of a problem for which the equation appears in the solution.arrow_forwardAn object is placed in front of a converging lens at an object distance of twice the focal length of the lens. Sketch a ray diagram and compare the image and object distances. Repeat with two more ray diagrams, using different focal lengths and still making the object distance twice the focal length. Can you draw any conclusions by comparing the object distance and the image distance?arrow_forward
- Construct ray diagrams to determine whether each of the following statement is true (T) or false (F). (a) For an object at a concave mirrors center of curvature, the image is real and inverted. (b) As an object approaches the focal point of a concave mirror, the image size shrinks to zero. (c) For an object in front of a convex mirror, the image is always virtual and upright.arrow_forwardConsider a pair of flat mirrors that are positioned so that they form an angle of 60 .. An object is placed on the bisector between the mirrors. Construct a ray diagram as in Figure 2.4 to show how many images ale formed. Figure 2.4 Two minors can produce multiple images. (a) Three images of a plastic lead are visible in the two minors at a right angle. (b) A single object reflecting from two minors at a right angle can produce three images, as shown by the greet, purple, and red images.arrow_forwardThe objective and the eyepiece of a microscope have the focal lengths 3 cm and 10 cm respectively. Decide about the distance between the objective and the eyepiece if we need a 10 x magnification from the objective/eyepiece compound system.arrow_forward
- Consider a pair of flat mirrors that are positioned so that they form an angle of 120 . An object is placed on the bisector between the minors. Construct a ray diagram as in Figure 2.4 to show how many images are formed. Figure 2.4 Two minors can produce multiple images. (a) Three images of a plastic lead are visible in the two minors at a right angle. (b) A single object reflecting from two minors at a right angle can produce three images, as shown by the greet, purple, and red images.arrow_forwardCopy and draw rays to find the final image in the following diagram. (Hint: Find the intermediate image through lens alone. Use the intermediate image as the object for the mirror and work with the mirror alone to find the final image.)arrow_forwardA lens is used to examine an object across a room. Is the lens probably being used as a simple magnifier? Explain in terms of focal length, the image, and magnification.arrow_forward
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