9. should you use? You can use Sunlight and a lens to start a fire. Which type of lens a) Converging b) Diverging c) Planar (flat on both sides) d) Any of the above lenses will work to start a fire.
Q: stella has hyperopia. The nearpoint of her right eye is 175 cm. What lens will restore the vision in…
A: Solution:- Concept and formulas used:- 1) A person with Hyperopia eye can see distant objects…
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Q: 96) A nearsighted person wears contact lenses having a power of -0.15 diopters. What is the person's…
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A: See below
Q: A myopic person has a near point of 23 cm and a far point of 37 cm. When correcting the distant…
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Q: 23) An object with a height of 50 cm is placed 2 meters in front of a concave mirror with focal…
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A: Question: When an object is placed two times farther from a diverging lens, the focal length of the…
Q: # 9. An object is placed in front of a lens and the image is upright, but smaller. What sort of lens…
A:
Q: 2. Both microscopes and telescopes have objective lenses that form real images. Why is it that the…
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Q: An object is 25.0 cm in front of a converging lens with a focal length of 55.0cm. Use ray tracing to…
A: object distance=25cm focal length= 55cm
Q: Two converging lenses are used to form a compound microscope, the first lens (object lens) has focal…
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Q: a) Determine the far point of a near-sighted person whose prescription is -6.00. h) Determine the…
A: Solution
Q: A slide projector has a converging lens whose focal length is 105 mm. How far from the lens must the…
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Q: An object is placed inside the focal point of a diverging lens, draw a ray diagram showing at least…
A: The ray diagram is given below for a diverging lens.
Q: Will the focal length of a lens change when it is submerged in water? Explain.
A: The focal length of the lens will change when it is submerged in water. It is because the lens works…
Q: 2) For a converging lens with focal length f = 10 cm, the object distance p = 25 cm. Calculate the…
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Q: 11) Two converging lenses are used to form a compound microscope, the first lens (object lens) has…
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Q: 4. We can use a lens as a distance gauge. For example, if I have a lens with a focal length of 50…
A: The expression for the focal length of either the convex or concave lens is,
Q: 22.) Farsightedness is a condition where a. light entering your eye is focused in front of your…
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Q: 7. Using graphical raytrace rules #1 and #2, construct the real image formed when an object is…
A:
Q: Identify in each situation where the image will form
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Q: A lens-maker wants to make a magnifying glass (double convex lens) of focal length 16 cm from a…
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Q: w9-7 A diverging lens has a focal length of −8.00 cm. What is the nature of the image formed when…
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Q: Calculate the focal length of the mirror formed by the convex side of a shiny spoon that has a 2.29…
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Q: The object is placed inside the focal length of a concave mirror. Describe the image of the object.
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A: magnification (m) = - 2image distance (di) = 17 cm
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Q: 6) An object is placed 20 cm in front of a converging lens of focal length 5 cm, where does the…
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Step by step
Solved in 3 steps
- Rank the following people from the most nearsighted to the most farsighted, indicating any ties:A. Bernie has a prescription of +2.0 D.B. Carol needs diverging lenses with a focal length of -0.35 m.C. Maria Elena wears converging lenses with a focal length of 0.50 m.D. Janet has a prescription of +2.5 D.E. Warren’s prescription is -3.2 D.1. What kind of mirror does a dentist use when he wants to observe a magnified image of the took, and where does he locate it for this purpose? 2. How far below the surface of a lake is the image of a star? Explain.3. Bifocal lenses are prescribed for a patient, the components having focal length of 40cm & -300cm. What are the new and far points of the patients eye?
- 15. An object is placed 70.0 cm in front of a lens whose focal length is +23.0 cm. The image that is formed of this object will be: a) inverted and 2.04 times the size of the object. b) inverted and 0.489 times the size of the object. c) erect and 2.04 times the size of the object. d) erect and has the same size as the object. e) erect and 0.489 times the size of the object.3. Why can we represent a spherical mirror by a straight line in a ray tracing?6) An object is placed very far in front of a converging lens of focal length 13.2 cm. Find the location of the image, be sure to indicate which side of the lens the image is on.
- 14 An object is placed 5 cm to the left of a converging lens. Its image forms 10 cm to the left of the lens. a) b) c) What is focal length of the lens? What is the magnification of the image? Is the image upright, or inverted? Why? Is the image real or virtual? Why?i) Explain why the crystalline lens of the eye gets a virtual object from the cornea.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.
- A shorter focal length will increase the power of which of the following? I. lens II. mirror A. Both I and II B. II only C. Neither I or II D. I onlyprovide justification3. What would happen to s' if s is very very large? (hint = object is at infinity) 4. For the lens of focal length f, what value of s (in terms of f) would give the magnification of -1?