if an object with a height of 3 cm is imaged by an optical system with a magnification of -4, the image height will be? a)-12 cm b)+12 cm
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if an object with a height of 3 cm is imaged by an optical system with a magnification of -4, the image height will be?
a)-12 cm
b)+12 cm
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- The mirror equation relates the object distance, d0, the image distance, di, and the focal length, f, of a mirror as1 / d0 + 1 / di = 1 / fWhile in other topics, distance and length are strictly non-negative, in optics we introduce the following sign conventions: Object distance is positive for a real object and negative for a virtual object. Image distance is positive for a real image and negative for a virtual image. Focal length is positive for a converging mirror and negative for a diverging mirror (a) Select the best choice to complete this statement. A real object placed in front of a converging mirror creates a real image under all circumstances. under no circumstances. when the object is between the focal point and the mirror. when the object is farther than the focal length from the mirror. (b) Select the best choice to complete this statement. A real object placed in front of a diverging mirror creates a virtual image under all circumstances. under no circumstances.…A tourist takes a picture of a mountain 19 km away using a camera that has a lens with a focal length of 50 mm. She then takes a second picture when she is only 4.7 km away. What is the ratio of the height of the mountain's image on the camera's image sensor for the second picture to its height on the image sensor for the first picture? Number UnitsAn object is placed 25 cm from a double convex lens that has a 15 cm focal point. a) What is the distance from the image to the lens? b) What is the magnification of the image?
- A movie camera with a (single) lens of focal length 60 mm takes a picture of a person standing 36 m away. If the person is 180 cm tall, what is the height of the image in millimeters on the film? Number UnitsA microscope objective with a magnification of 11 is used in a microscope with a magnification of 51. Find the focal length of the ocular if the ocular's image is formed at the eye's near point, 26 cm from the eye. Neglect the distance between the eye and the ocular.To view an insect, an entomologist places a converging lens with a focal length of 10 cm a distance of 8.0 cm from the insect. What will be the magnification of the insect's image? O a. +4 b. +3 O c. +6 d. +7 O e. +5
- The focal length of a lens in a box camera is 10 mm. The fixed distance between the lens and the film (image) is 12 mm. If the object is clearly focused on the film, how far must the object be from the lens? do= do'=f'-d;" %3DA camera is equipped with a lens with a focal length of 22 cm. When an object 1.8 m (180 cm) away is being photographed, how far from the film should the lens be placed? cmA concave lens has a focal length of -45 cm. a) Find the image distance that results when an object is placed 32 cm in front of the lens. b) Find the magnification that results when an object is placed 32 cm in front of the lens.
- A convex mirror has a focal length of -26 cm. Find the magnification produced by the mirror when the object distance is (a)11 cm and (b)21 cm. (a) m₁ = i (b) m₂ = i Object 2K Virtual imageAn object is placed 27 cm in front of a diverging lens having a focal length of magnitude 65 cm. What is the image distance, in cmA microscope objective with a magnification of 12 is used in a microscope with a magnification of 51. Find the focal length of the ocular if the ocular's image is formed at the eye's near point, 23 cm from the eye. Neglect the distance between the eye and the ocular.