A converging lens is inserted into a round hole in the non-pros

A converging lens is inserted into a round hole in an opaque screen. A point light source is located on the main optical axis of the lens at a distance of 10 cm from it. On the other side of the lens, at the same distance from it, the screen is placed perpendicular to the axis. A light circle is visible on the screen, the diameter of which is 2 times smaller than the diameter of the lens. You need to find the focal length of the lens. To find the focal length of a lens, you can use the thin lens formula: 1/f = 1/s1 + 1/s2, where f is the focal length of the lens, s1 is the distance from the lens to the light source, s2 is the distance from the lens to the image on the screen. In this problem, s1 = 10 cm and s2 = 20 cm are known (since the image on the screen is at a distance of 10 cm from the lens and another 10 cm from the perpendicular placed on the other side of the lens). Substituting the known values ​​into the formula, we get: 1/f = 1/10 + 1/20, 1/f = 3/40, f = 40/3 cm. Thus, the focal length of the lens is 40/3 cm.

Product description

Item Name: Converging Lens

Product category: Optical instruments

Price: 1000 rubles

Description:

A converging lens is inserted into a round hole in an opaque screen. The lens has a focal length of 40/3 cm and can be used to enlarge images.

Features:

• Focal length: 40/3 cm
• Lens diameter: 5cm
• Lens material: Optical glass
• Color: Transparent

Equipment:

• Converging lens
• Package

Product description:

Item Name: Converging Lens Product category: Optical instruments Price: 1000 rubles Description: A converging lens is inserted into a round hole in an opaque screen. The lens has a focal length of 40/3 cm and can be used to enlarge images. Characteristics:

• Focal length: 40/3 cm
• Lens diameter: 5cm
• Lens material: Optical glass
• Color: Transparent Equipment:
• Converging lens
• Package

This converging lens is made of optical glass and has a diameter of 5 cm. The focal length of the lens is 40/3 cm, which allows it to be used for magnifying images. The lens is installed in a round hole in an opaque screen, which allows you to create conditions for obtaining a clear image. The kit also includes packaging for convenient storage and transportation of the lens.

In addition, this lens can be used to solve optical problems, for example, to determine the focal length of a lens using the thin lens formula. In the problem described at the beginning, the focal length of a given lens was found by substituting known values ​​into the formula. If you have questions about solving such problems, you can always seek help from specialists in the field of optics.

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Product description:

A converging lens is proposed, which is inserted into a round hole in an opaque screen. A lens can be used to focus light, for example to create a magnified image or to compress rays of light into a single point.

The focal length of the lens can be calculated using the formula:

1/f = 1/o + 1/i,

where f is the focal length of the lens, o is the distance from the light source to the lens, i is the distance from the lens to the image on the screen.

In this case, a point light source is located on the main optical axis of the lens at a distance of 10 cm from it, and a light circle is visible on the screen, the diameter of which is 2 times less than the diameter of the lens. Therefore, the distance from the light source to the lens (o) is 10 cm, and the distance from the lens to the image on the screen (i) is equal to half the diameter of the lens.

Thus, the focal length of the lens can be calculated using the formula:

1/f = 1/0.1 + 1/(0.5d),

where d is the diameter of the lens.

By solving this equation, you can obtain the focal length of the lens. If you have any questions about the solution, you can ask for help.

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1. Excellent digital product with high quality workmanship!
2. The converging lens produces very clear images.
3. Convenient and compact body that fits easily in your pocket.
4. Easy to use, does not require special knowledge and skills.
5. An excellent choice for photography and videography enthusiasts.
6. Ability to quickly and accurately focus on an object.
7. A wide range of settings to get the perfect image.
8. Universal use - suitable for shooting both indoors and outdoors.
9. The product corresponds to the description and expectations.
10. Excellent value for money and quality!

Peculiarities:

Excellent digital product with high quality workmanship.

Excellent design and ergonomics, which makes the use of the product comfortable and enjoyable.

Quick and easy installation, which allows you to start using the product immediately after purchase.

It has many useful features that greatly simplify the work and increase the efficiency of use.

Excellent value for money, which makes the product more accessible to a wide audience.

A unique opportunity to customize and customize the product to suit your needs and preferences.

Reliability and durability of the product, which guarantees a long period of its use without loss of quality.

Ease of use and an intuitive interface that makes it easy to work with the product even for beginners.

Wide functionality and many features that allow you to use the product in various fields of activity.

Attractive appearance and stylish design, which makes the product not only functional, but also aesthetically attractive.