A diverging lens always makes a reduced image. Could you use such a lens to start a fire by focusing sunlight? Explain.
Q: A lens can be used to start a fire by focusing an image of the sun onto a piece of flammable…
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Q: Two converging lenses with focal lengths 12 and 20 cm are placed 8 cm apart. An object is placed 36…
A: Given:- Two converging lenses with focal lengths f1=12 and f2 = 20 cm are placed d = 8 cmapart. An…
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A: Introduction: Astigmatism is an eye defect in which the front surface of the eye inside the eye is…
Q: *68 In Fig. 34-44, a real inverted image I of an object O is formed by a particular lens (not…
A: Since the image formed is real, the lens has to be a converging lens.
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A: To find the focal length of the lens in terms of the radius of curvature R , we can use the…
Q: Give the position of the screen (xS) that shows the focused image, for these numbers:
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Q: Which of the following is NOT an advantage that a larger lens has over a smaller lens (all other…
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A: Telescopes are the optical instruments used to see distant objects.
Q: bconline.broward.edu An apple is 20 cm in front of a convex lens of focal length 75 cm. a) Where is…
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Q: / calculate The focal length and Lens power from this figure 0.028 0.025
A: Power of a lens is defined as capacity of lens to converge or diverge rays of light.
Q: A thin double-convex lens with focal length f is used to magnify the date stamp on an old coin. The…
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Q: Secondly, the iris blocks light from hitting the extreme edges of the crystalline lens. Why might an…
A: The name of the effect when light hits the extreme edges of the lens is Lens Flare Effect which is…
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Q: 10:07 AM Fri Nov 25 bconline.broward.edu A coin is 12 cm in front of a converging lens with focal…
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Q: Three lenses are placed in a row, separated by 12 cm. The first lens is a diverging lens with focal…
A: The focal length of a diverging lens is negative and for converging lens it is positive.
Q: 4. You have an optical system modeled as a thin lens of focal length 10 meter. The object of…
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Q: An object is located 1.5 m from a 5.3-D lens. By how much does the image move if the object is…
A: Data Given , Distance of object ( u ) = 1.5 m Power of lens ( P ) = 5.3 D Let , Image distance from…
Q: A 1.3 cm-tall object stands in front of a converging lens. It is desired that a virtual image 2.2…
A: The expression for find distance of object is m=-hih0=did0
Q: 3) A 2.05-cm-tall object is placed 30.0 cm to the left of a converging lens with a focal length f1 =…
A: An h0 =2.05 cm tall object is placed 30.0 cm to the left of a converging lens with a focal…
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A: Given Object distance for convex lens= -23 cm Focal length of concave lens f2 = -15 cm
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A: Refractive index of lens, n =1.25 refractive index of water, n' = 1.33
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- Lenses are of two types converging and diverging. The light gets refracted through a lens.
- A converging lens is capable of converging the light rays that fall on it to a point. It is also known as a convex lens.
- A diverging lens will diverge all the rays that fall on it and is called a concave lens.
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- Can you please help me with this question? Thank you!97. ssm Mars subtends an angle of 8.0 X 10-5 rad at the unaided eye. An as- tronomical telescope has an eyepiece with a focal length of 0.032 m. When Mars is viewed using this telescope, it subtends an angle of 2.8 × 10-³ rad. Find the focal length of the telescope's objective lens.Suppose you wanted special glasses designed to wear underwater, without a face mask. Should the glasses use a converging or diverging lens in order for you to be able to focus under water? Explain.
- 1. A homeowner wishes to mount a floodlight on a wall of a swimming pool underwater so as to provide the maximum illumination of the surface of the pool for use at night. At what angle with respect to the wall would the light be pointed? The answer is 46 degrees. 2. In a slide projector, a slide is positioned 0.102 meters from a converging lens that has a focal length of 0.1 meters. At what distance from the lens must the screen be placed so that the image of the slide will be in focus? The answer is 5.1m 3. Compute the magnification for the slide projector in Q2. The answer is -50XSpherical aberration is due to light rays O a. passing through the outer portions of a lens not focusing at the same point as rays that pass through the center O b. of different wavelength not focusing at the same point O C. passing through the lens in the vertical direction not focusing at the same point as rays passing through the lens in the horizontal direction O d. passing through the outer portions of a lens being absorbed more than rays that pass through the centerA converging lens of focal length 4 m produces a magnified image 2.4 times the size of the object. What is the object distance if the image is a) real? m b) virtual? m
- can you use the formulas from the picture? thank you*4. An object 3 mm high is placed 50 cm to the left of a converging lens of focal length 40 cm. A second converging lens with a focal length 10 cm is placed 220 cm to the right of the first lens. Where is the final image? Is it real or virtual? What will be the image size? Is it erect or inverted? 3 mm 1... -50 cm- f₁ = 40 cm 220 cm- f = 10 cmIf the screen is at the right position and the object is in a right position, the lens will focus the image of the object onto the screen. If the screen is anywhere else, the object will look blurry or won't be seen. The optical table has a meter-tape attached to the side, to give the position of the items. If the object is in a wrong position, the lens will defocus the light -- spread it out. That means that the screen can't be placed anywhere to display a focused image. If xL = 32.7 cm and the focal length is f = 20.8 cm, give a position (xO) that results in the light from the object spreading out. (There are infinitely many such positions.)
- 2. Show that the minimum distance between a real object and its real image given by a convergent lens of focal length f is 4f. Get q as a function of p from 1/p + 1/q = 1/f. Take the derivative of s = p +q to find the value of p for which s is minimum.Is it possible to obtain a non-inverted image with a converging spherical lens? Explain.xvi