Physics

The object distance is smaller than the focal length of the convex lens (do < f)

Based on the calculation of the image formation by the convex lens, it can be concluded that the object distance (do) is smaller than the focal length (f) of the convex lens, the image properties are:

– Virtual means the beam of light does not pass through the image

– Upright

– The farther the object is from the convex lens, the greater the image size

– The farther the object is from the convex lens, the image farther away from the convex lens

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Article about Equation of converging (convex) lens

Before learning the equation of the convex lens, understand the sign rules of the convex lens below.

Sign rules of the convex lens

– The object distance (do)

If an object is passed through a beam of light, then the object distance is positive.

– The image distance (di)

If the beam of light passes the image, then the image distance is positive (real image). If the beam of light does not pass through the image, the image distance is negative (virtual image).

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Article about Image formation by converging (convex) lens

To understand the image formation by the convex lens, learn example problems and solution below. In this case, the object is assumed to be at a certain distance from the convex lens,

then draw the image formation by the convex lens, the image distance from the convex lens and the magnification of the image by the convex lens.

The convex lens has a focal length of 20 cm. Objects with a height of 10 cm are located to the left of the lens. Determine the image distance, the magnification of the image and the image height, if:

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Article about Ray diagrams for converging (convex) lens

If an object is on one side of the convex lens, the convex lens can form the image of the object. If the position of the object on one side of the convex lens is known, how to draw the image formation of the object? Suppose an object is on the left side of the convex lens, as shown below.

Orange line = convex lens

Blue line = principal axis

Arrow (green) = object

F₁ = focal length 1 and F₂ = focal length 2

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Article about Converging (convex) lens

Definition of the convex lens

One type of lens used in everyday life is the convex lens. The convex lens is a lens with a thicker middle while the edges are thinner. Convex lenses are usually circular and made of glass so that the lens has the refractive index higher than the refractive index of the air.

Types of the convex lenses

In general, there are three types of the convex lenses, in which the shape of the convex lens is as shown below (side view).

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Article about Properties of image formed by diverging lens

The object distance is smaller than the focal length of the concave lens (do > f)

Based on the calculation of the image formation by the concave lens, it can be concluded that if the object distance (do) is smaller than the focal length (f), then the image properties are:

– Virtual means the beam of light does not pass through the image

– Upright

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Article about Equation of diverging (concave) lens

Before deriving the equation of the concave lens, first understood the sign rules of the concave lens.

Sign rules of the concave lens

The following are the sign rules of the concave lens.

– The object distance (do)

If the object is on the side of the lens that is the same as the direction of the beam of light, then the object distance is positive.

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Article about Image formation by diverging lens (concave lens)

To understand the image formation by the concave lens, look at the following example problems and solution. In this case, the object is assumed to be at a certain distance from the concave lens,

then draw the image formation by the concave lens, the image distance from the concave lens and the magnification of the image by the concave lens.

The focal length of a concave lens (diverging lens) is 20 cm. Objects with a height of 10 cm are located at the left of the lens. Determine the image distance, the magnification of the image and the height of the image, if:

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Article about Ray diagrams for diverging (concave) lens

If an object is on one side of the concave lens, the concave lens can form the image of the object. If the position of the object on one side of the concave lens is known, how to draw the image formation of the object? Suppose an object is on the left side of the concave lens, as shown in the figure below.

Orange line = the concave lens

Blue line = the principal axis

Arrow (green) = object

F₁ = the focal length 1 and F₂ = the focal length 2

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Article about Diverging (concave) lens

Definition of the concave lenses

One type of lens used in everyday life is the concave lens. A concave lens is a lens with a thinner center while thicker edges. The concave lenses are usually circular, although there are also lenses that are not circular. The concave lenses, like convex lenses, are made of glass so that the lens has a refractive index greater than the refractive index of the air.

Types of the concave lenses

In general, there are three types of the concave lenses, where the shape of the lens looks like in the figure below (side view).

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