10- For safety reasons, you install a rear-window lens with a − 0.304 m focal length in your van. Before putting the van in reverse, you look through the lens and see the image of a person who appears to be 0.337 m tall and 0.243 m behind the van. Determine the following. (a) distance of the person behind the van _____ m (b) height of the person _____ m

10- For safety reasons, you install a rear-window lens with a − 0.304 m focal length in your van. Before putting the van in reverse, you look through the lens and see the image of a person who appears to be 0.337 m tall and 0.243 m behind the van. Determine the following. (a) distance of the person behind the van _ m (b) height of the person _ m

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Question 2 You go for a free eye test in City Pharmacy. (a) The prescription given to you for eyeglasses reads: “P = +2.0D”. Explain what this means in terms of the focal length, and the type of lens needed.(b) From this prescription, does this mean you are Nearsighted or Farsighted?
You have a thin, diverging lens. If the value of q (the distance from the image to the mirror along the principal axis of the mirror) is -2.59cm and the distance of p (the distance from the object to the mirror along the principal axis of the mirror) is 23.36cm, what is the focal length of the diverging lens?
Ch 26, problem 7 An object is 21.0 cm from a converging lens, and the image falls on a screen. When the object is moved 3.50 cm closer to the lens, the screen must be moved 2.20 cm farther away from the lens to register a sharp image. Determine the focal length of the lens.
20. This question is about convex lenses. (a) A convex (converging) lens is u d to project an image onto a screen. The focal length of the lens is 10 cm. The object is placed at a distance of 15 cm from the centre of the lens on the principal axis. (i) Define principal axis. (ii) Construct rays to locate the position of the image. 15 cm object principal axis f f 10 cm 10 cm convex lens (iii) Identify the nature of the image.
Problem 96. Indicate the single lens type (converging or diverging) and object position that will lead to the following kind of images. If no single lens system can produce the particular image indicate that this is so. A) real, upright, enlarged image. B) huge image at "infinity". C) real, enlarged, inverted image. D) tiny inverted image very near the focal point. E) real, reduced in size, inverted image. F) virtual, reduced in size, upright image. G) virtual, enlarged, upright image. H) real, inverted image that is the same size as the object. I) virtual, enlarged, inverted image. Problem 97. You are handed a converging lens and you have a ruler. Describe two different simple ways to determine the focal length of this lens. Each way should involve making only one measurement.
a) If the focal length of a converging lens is 2.0 meters and an object is placed 10 meters away, how faraway is the image of the object from the lens?b) Draw a ray-trace diagram for a converging lens.
5. A convex lens forms an image of a soda can. The image is 2 cm tall and appears 8 cm from the lens. The height of the soda can is 10 cm. (a) Include a drawing/ray diagram of this setup, (b) Where is the can located (object distance) and (c) what is the focal point of this lens?
12) Spherical mirrors. Object O stands on the central axis of a spherical mirror. For this situation object distance is ps = +17 cm, the type of mirror is concave, and then the distance between the focal point and the mirror is 12 cm (without proper sign). Find (a) the radius of curvature r (including sign), (b) the image distance i, and (c) the lateral magnification m. Also, determine whether the image is (d) real or virtual, (e) inverted from object O or noninverted, and (f) on the same side of the mirror as O or on the opposite side.
1) A piece of thin spherical shell that has a radius of curvature of 145 cm is silvered on both sides. The concave side of the piece forms a real image 500 cm from the mirror. The piece is then turned around so that its convex side faces the object. The piece is moved so that the image is now 30 cm from the piece on the concave side.
2. A meter stick is held length wise along the principle axis of a concave mirror. The focal length of the mirror is 40 cm the zero end of the meter stick is L=65 cm from the mirror, %3! Meter stick 100 cm L (A) What type of image (real or virtual) will be formed? Justify/explain. (2 points) (B) How long is the image of the meter stick? Show your work. (8 points)
What range of do values will result in a virtual image? Infer this information for both the lens and mirror based on the data collected. Report these ranges in terms of f and/or 2f. For example, “When do is less than 2f.”
A photographer places a 1.75 cm high pearl 3.50 cm in front of a concave mirror. This results in a 5.50 cm high virtual image of the pearl appearing as if behind the mirror. What is the mirror's focal length (in cm)? |-5.13 X cm