TAILIEUCHUNG - physics_test_bank_split_36

Tham khảo tài liệu 'physics_test_bank_split_36', khoa học tự nhiên, vật lý phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Simpo PDF Merge and Split Unregistered Version - http 56. A 3-cm high object is in front of a thin lens. The object distance is 4 cm and the image distance is -8 cm. The image height is A. cm B. 1 cm C. D. 6 cm E. 24 cm ans D 57. When a single-lens camera is focused on a distant object the lens-to-film distance is found to be mm. To focus on an object m in front of the lens the film-to-lens distance should be A. mm B. mm C. mm D. mm E. mm ans E 58. In a cinema a picture cm wide on the film is projected to an image wide on a screen that is 18 m away. The focal length of the lens is about A. cm B. 10 cm C. cm D. 15 cm E. 20 cm ans D 59. The term virtual as applied to an image made by a mirror means that the image A. is on the mirror surface B. cannot be photographed by a camera C. is in front of the mirror D. is the same size as the ob ject E. cannot be shown directly on a screen ans E 60. Which instrument uses a single converging lens with the object placed just inside the focal point A. Camera B. Compound microscope C. Magnifying glass D. Overhead projector E. Telescope ans C 526 Chapter 34 IMAGES Simpo PDF Merge and Split Unregistered Version - http 61. Let fo and fe be the focal lengths of the objective and eyepiece of a compound microscope. In ordinary use the object A. is less than fo from the objective lens B. is more that fo from the objective C. produces an intermediate image that is slightly more than fe from the eyepiece D. produces an intermediate image that is 2fe away from the eyepiece E. produces an intermediate image that is less than fo from the objective lens ans B 62. Consider the following four statements concerning a compound microscope 1. Each lens produces an image that is virtual and inverted. 2. The objective lens has a very short focal length. 3. The eyepiece is used as a simple magnifying glass. 4. The objective lens is convex and the eyepiece .

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