the image of an object located at infinity in the object space is... A) located in the image principal point B) always a virtual image C) located at infinity in the image space D) located in the image focal plane E) always a real image
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what is the correct answer?
the image of an object located at infinity in the object space is...
A) located in the image principal point
B) always a virtual image
C) located at infinity in the image space
D) located in the image focal plane
E) always a real image
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- HW8 Q2 A concave lens has a focal length of -43 cm. Find the image distance that results when an object is placed 32 cm in front of the lens. Express your answer using two significant figures. Find the magnification that results when an object is placed 32 cm in front of the lens. Express your answer using two significant figures.A concave spherical mirror has a radius of curvature of 20 cm. Give your answers with units. a) What is the image distance for an object at a distance of 30 cm from the mirror? Number Units b) Is this image real or virtual? O real O virtual c) What is the image distance for an object at a distance of 5 cm from the mirror? Number Units d) Is this image real or virtual? real O virtualThe 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.…
- Using a thin bi-convex lens (f = 10 cm) an image is generated that is twice as large as the small object. a) Calculate the object distance as well as the image distance if the image is upright. b) Sketch the optical path of the system indicating the central ray, the parallel ray as well as the focal ray.Determine the image distance and size for a 10.00-cm tall object placed a) 60.0 cmb) 10 cm from a concave mirror having a focal length of 30.0 cm. Draw light ray diagrams for each case.A 3.0-cm-high object is placed 10.0 cm from a concave mirror of focal length 4.0 cm. determine the image characteristics using a ray diagram and the mirror equation also, di ho, hi,. and m where, di= image distance ho= height of the object hi= height of the image m= magnification
- 1) A convex/converging lens has a focal length f. An object is placed in the focal point of the lens. Where does the image form? (Multiple Choice) a. behind the lens b. at infinity c. in front of the lens d. in the focal point behind the lens 2) A tall object is placed in front of a converging lens, at a distance smaller than the focal distance. What type of image does the lens form? (Multiple Choice) a. virtual, upright and smaller than the object b. real, inverted and smaller than the object c. virtual, upright and larger than the object d. virtual, inverted and larger than the object e. real, upright, and larger than the object 3) A lamp placed in front of a lens forms an image that is real, smaller than the lamp, and inverted. Where is the lamp placed? (Multiple Choice) a. between the lamp and twice the focal distance b. further than twice the focal distance c. between the lens and the…to produce an image with a height of +10 cm when the object has a height of +1 cm, the magnification of an optical system must be? a)+10 b)-10 c)0.1 d) -0.1A 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.
- 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 cmAn object is placed in front of a lens which forms an image of the object. Which answer is correct A) If the image is real, then it is also upright. B) If the image is real, then it is also inverted. C) If the image is virtual, the lens must be a diverging lens. D) If the lens is convex, the image cannot be virtual. E) If the image is virtual, then it is also inverted.Assuming the orientation of the object is upright, if the magnification of a mirror or lens is negative, it means that A) the image must be smaller than the object. B) the image must be inverted and smaller than the object. C) the image must be inverted. D) the object must be farther from the mirror (or lens) than the image. E) the image must be farther from the mirror (or lens) than the object.