A stamp collector wants to magnify an image by 4.0 when the stamp is 3.5 cm from the lens. What focal length is needed for the lens?

Q: The distance from the front to the back of your eye is approximately 1.90 cm. If you can see a clear…

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Q: A person has a near point of 40 cm and a far point of 2.0 m. When looking through lenses of focal…

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Q: A friend who is an education major is working on a project for a science-teaching class. She wants…

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Q: A double concave lens has surface radii of 33.4 cm and 28.8 cm. What is the focal length if n=1.58?

A: See below

Q: How far from a 25.0 -mm-focal-length lens must an object be placed if its image is to be magnified…

A: Given Focal length of a lens = 25.0 mm  We have to calculate the object distance when (i)…

Q: You have a lens with a focal length of -5.5 cm. If you put an object a distance 10.7 cm from the…

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Q: A. For a diverging lens (f = -18.0 cm), find the image distance for an object that is 18.0 cm from…

A: A) focal length (f) = -18 cm object distance (d) = 18 cm

Q: An image is formed using a converging lens with a focal length of 16cm. The object is a distance of…

A: Write the given values with the suitable variables. f=16 cmu=-8 cm Here, f and u are the focal…

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: what is the focal foc

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Q: For safety reasons, you install a rear-window lens with a -0.296 m focal length in your van. Before…

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Q: You measure an object distance of 0.3 m and an image distance of 0.15 m. Solve for the focal length…

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Q: A lens forms a real image that is 224 cm away from the object and 1 2/3 times its length. A)What…

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Q: A 2.0-cm object is placed 30.0 cm from a converging lens that has a focal length of 10.0 cm as shown…

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Q: A camera is used to photograph the full moon, which has an angular diameter of 0.51°. The image on…

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Q: You have a lens with a focal length of +7.5 cm. If you put an object a distance 10.7 cm from the…

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Q: Ellen places an object 40.0 cm from a concave lens. If a virtual image appears 10.0 cm from the lens…

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Q: A concave mirror on the left is separated from a converging lens on the right by 36 cm. An object is…

A: Given:- fmirror = 12 cm flens = 10 cm

Q: forms an upright image fou real image. Which of the fc

A: Answer-               ( A )15cm SOLUTION-

Q: A particular farsighted person's eye can normally focus on an object at 80 cm. This person wants to…

A: Given data The farsight of the person is given as F = 80 cm. The distance between the corrective…

Q: a far sighted person has a near point of 98 cm. to correct their vision so they can see objects…

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Q: A thin lens shown has a focal length with a magnitude of 5.33 cm. If an object is placed 1.54 cm to…

A: Given,1v=1f+1u Focal length,f=5.33cmObject Distance,u=-1.54cm We have to calculate the image…

Q: 9. An object is placed 55.0 cm in front of a diverging lens. What is the focal length if the…

A: Given: The distance of the object is 55 cm. The distance between the object and the image is 21 cm.

Q: A 4.0 cmcm -tall candle flame is 2.0 mm from a wall. You happen to have a lens with a focal length…

A: Height of candle = 4 cm = 0.04 m Distance from the wall = 2 m  Focal length , f = 42 cm = 0.42 m To…

Q: A prescription for reading glasses has a power of P = 2.24 D. What is the focal length of the…

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Q: An object is 25 centimeters from a converging lens with a focal length of +35 centimeters. Where is…

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Q: The power of the lens is -2D. What is the focal length and nature of the lens? Converging lens of…

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Q: A magnifying glass gives an angular magnification of 8 for a person with a near-point distance of sN…

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Q: A lens that is constructed from a glass, whose index of refraction is 3, has a focal length of 22…

A: Given data: Index of refraction of first lens (μ1) = 3 Focal length of first lens (f1) = 22 cm Focal…

Q: You have three lenses stuck together. What is the focal length of the combination? f1-27 cm, f2-16…

A: Given data  The focal length of the first lens is given as f1 = 27 cm. The focal length of the…

Q: You are using a converging lens to look at a splinter in your finger. The lens has a 6.0 cm focal…

A: Step 1:Step 2:

Q: A converging lens has a focal length of 8.00 cm. What is the nature of the image formed when the…

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Q: For a converging lens, the object lies 13 cm from the lens and the image is 21 cm from the lens on…

A: Given data:  A converging lens Object distance from lens = 13 cm Image distance from the lens = 21…

Q: You may use a calculator. An object is placed 10.0 cm to the left of a convex lens with a focal…

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Q: A patient with a near point of 60 cm needs contact lenses. What focal length lens should be…

A: near point = V = - 60 cm object distance = U = - 25 cm

Q: Hanhyun and Gwangwoo are experimenting with lenses. They take a double convex lens with radii…

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Q: You are designing contact lenses for someone whose near point is 75 cm. What focal length lens…

A: Using lens formula,

Q: A near sighted person has a far-point of 3.68 m. to correct their vision, what should the focal…

A: Far point, D = 3.68 m Lens distance, d = 2 cm  Focal length, f = ?

Q: You have a lens whose focal length is −6.11 cm.−6.11 cm. You place an object on the axis of the lens…

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Q: A student lab group wants to project a 32.2 cm tall image of a candle on a square card that is 3.1 m…

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Q: You hold a magnifying glass 4.0 cm above  1.98 mm-long bug and the image is 5.44 mm long. What is…

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Q: A prescription for reading glasses has a power of P = 2.42 D. What is the focal length of the…

A: Given data:  Power (P) = 2.42 D Required: Focal length in cm

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.