to find the new focal length when the lens is put into water it becomes the 4 times the focal length in air.
The focal length of a plane is a fixed distance that defines its curvature or orientation. It does not change and can be specified by the designer or manufacturer. To find the focal length of a plane, refer to the technical specifications provided by the manufacturer or measure it directly using optical tools such as a focal length tester.
To calculate the magnification power with a 30 mm eyepiece, you need to divide the focal length of the telescope by the focal length of the eyepiece. For example, if the telescope has a focal length of 600 mm and you use a 30 mm eyepiece, the magnification would be 20x (600 mm / 30 mm = 20x).
To find the length of a volume, you need to know the volume's dimensions. The formula to calculate the volume of a rectangular solid (length × width × height) can help determine the necessary length if the other dimensions are known.
You can calculate the volume of a square-based pyramid by using the formula V = (1/3) * base area * height. If you know the length of the base, you can find the base area by squaring this length. Plug in the values to find the volume.
Since we don't know the weight of the cube itself, we can only tell the weight of the water. Since the volume of a 3-foot cube is 27 cubic feet, we find that 27 cubic feet is equal to 202 gallons. Because one gallon of water weighs about 8.35 pounds, we multiply 202 x 8.35 for a result of 1,686.7 pounds for the water alone.
The focal length of a convex lens is easier to find than a concave lens because for a convex lens, the focal length is positive and is measured from the lens to the focal point. In contrast, for a concave lens, the focal length is negative and the rays of light are diverged. This makes it more challenging to find the focal point accurately.
To find the focal length of a lens, you can use the lens formula: 1/f 1/do 1/di, where f is the focal length, do is the object distance, and di is the image distance. Measure the object and image distances from the lens, then plug the values into the formula to calculate the focal length.
Focus or focal length?
radius of curvature = 2Focal length
The focal length of a plane is a fixed distance that defines its curvature or orientation. It does not change and can be specified by the designer or manufacturer. To find the focal length of a plane, refer to the technical specifications provided by the manufacturer or measure it directly using optical tools such as a focal length tester.
The focal length of a concave mirror can be found by using the mirror formula, which is 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance. By measuring the object and image distances from the mirror, you can calculate the focal length using this formula.
The size (diameter) of a lens does not determine its focal length. The amount of curvature of the lens does. Citing a diameter for a lens doesn't help us find the focal length. Lenses are ground to specifications that allow short or long focal length. The more curved the lens, the shorter the focal length. You can see this if we specify a given curvature and then start to "flatten" the lens. The focal length will get longer and longer as the lens is flattened. When the lens is flat (has to curvature) the lense has an infinite focal length, just like a piece of flat glass.
The power of a lens is 1/focal length (measured in meters).
The power of a lens is 1/focal length (measured in meters).
The focal length of a lens can be calculated using the formula: ( \text{focal length (cm)} = \frac{1}{\text{power of lens (diopters)}} ). Substituting the given power of ( +1.5 \text{ D} ), we get ( \text{focal length (cm)} = \frac{1}{1.5} = 0.67 \text{ cm} ).
One common method is to use the lens formula: 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance. By measuring these distances and plugging them into the formula, you can calculate the focal length of the lens. Alternatively, you can use a lens positioning system to determine the position of the focused image, which can also help you find the focal length.
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