33. Geometric Optics

Thin Lens And Lens Maker Equations

33. Geometric Optics

# Thin Lens And Lens Maker Equations - Video Tutorials & Practice Problems

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concept

## Thin Lens Equation

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2

Problem

ProblemA biconvex lens has a focal length of 12 cm. If an object is placed 5 cm from the lens, where is the image formed? Is it real or virtual? Is it upright or inverted? What's the height of the image if the object is 2 cm tall?

A

s_{i} = -8.5 cm; Real; Upright; 1.7 cm

B

s_{i} = -0.117 cm; Virtual; Upright; 1.7 cm

C

s_{i} = -8.5 cm; Real; Inverted; 3.4 cm

D

s_{i} = -8.5 cm; Virtual; Upright; 3.4 cm

3

concept

## Lens Maker Equation

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4

example

## Example 1

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example

## Example 2

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PRACTICE PROBLEMS AND ACTIVITIES (22)

- A thin lens with a focal length of 6.00 cm is used as a simple magnifier. (a) What angular magnification is ob...
- BIO A person can see clearly up close but cannot focus on objects beyond 75.0 cm. She opts for contact lenses ...
- BIO A person can see clearly up close but cannot focus on objects beyond 75.0 cm. She opts for contact lenses ...
- BIO Ordinary Glasses. Ordinary glasses are worn in front of the eye and usually 2.0 cm in front of the eyeball...
- BIO (a) Where is the near point of an eye for which a contact lens with a power of +2.75 diopters is prescribe...
- A telescope is constructed from two lenses with focal lengths of 95.0 cm and 15.0 cm, the 95.0-cm lens being u...
- Resolution of a Microscope. The formed by a microscope objective with a focal length of 5.00 mm is 160 mm fro...
- The focal length of the eyepiece of a certain microscope is 18.0 mm. The focal length of the objective is 8.00...
- The focal length of a simple magnifier is 8.00 cm. Assume the magnifier is a thin lens placed very close to th...
- BIO Contact Lenses. Contact lenses are placed right on the eyeball, so the distance from the eye to an object ...
- A lightbulb is 3.0 m from a wall. What are the focal length and the position (measured from the bulb) of a len...
- A lens forms an of an object. The object is 16.0 cm from the lens. The is 12.0 cm from the lens on the same ...
- A converging lens with a focal length of 70.0 cm forms an of a 3.20-cm-tall real object that is to the left o...
- A converging lens with a focal length of 9.00 cm forms an of a 4.00-mm-tall real object that is to the left o...
- A lensmaker wants to make a magnifying glass from glass that has an index of refraction n = 1.55 and a focal l...
- For each thin lens shown in Fig. E34.37, calculate the location of the of an object that is 18.0 cm to the le...
- An object is 16.0 cm to the left of a lens. The lens forms an 36.0 cm to the right of the lens. (b) If the ob...
- You wish to project the of a slide on a screen 9.00 m from the lens of a slide projector. (b) If the dimensio...
- Zoom Lens. Consider the simple model of the zoom lens shown in Fig. 34.43a. The converging lens has focal leng...
- A camera lens has a focal length of 180.0 mm and an aperture diameter of 16.36 mm. (a) What is the ƒ-number of...
- A 25-cm-long rod lies along the optical axis of a converging lens, perpendicular to the lens plane. The lens h...
- FIGURE CP35.50 shows a lens combination in which the lens separation is less than the focal length of the conv...