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When your eye is relaxed, the lens has its shortest focal length.

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5mo ago

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Related Questions

What is the shortest focal length lens available for capturing wide-angle shots?

The shortest focal length lens available for capturing wide-angle shots is typically around 10-14mm.


What is the process to take the largest image distance and calculate the focal length of the lens used?

To calculate the focal length of a lens using the largest image distance, you can use the lens formula: 1/f 1/v 1/u, where f is the focal length, v is the image distance, and u is the object distance. Rearrange the formula to solve for f: f 1 / (1/v 1/u). Plug in the values for v and u to find the focal length of the lens.


You can take long distance photographs with what lens?

The one with the largest available focal length.


What is the relationship between field of view (FOV) and focal length in a focal length calculator?

In a focal length calculator, the field of view (FOV) and focal length have an inverse relationship. This means that as the focal length increases, the field of view decreases, and vice versa.


Length of a lens is the distance from the center of the lens to its principal focus?

It is called the focal length. It is equal to 1/2 times r, and is positive on concave mirrors and negative on convex mirrors.


The distance from lens to focal point is called?

The distance from a lens to the focal point is called the focal length.


What happens if you decrease a telescopes eyepiece focal length?

The magnification of the telescope image is(focal length of the objective) divided by (focal length of the eyepiece).The focal length of the objective is fixed.Decreasing the focal length of the eyepiece increases the magnification of the image.(But it also makes the image dimmer.)


How can you calculate magnification from the focal length of a lens?

To calculate magnification from the focal length of a lens, you can use the formula: Magnification (Image distance / Object distance) (focal length / focal length - object distance).


What would be the effect on magnification to increase the focal length of microscope and telescope?

The focal length of a telescope is directly related to the magnification in that the longer the focal length, the more magnification you get from the telsceope. How the focal length of a telescope relates to the length of the telescope itself depends on the design of the telescope. In a refracting telescope, the focal length is approximately the length of the telescope. In a reflecting telescope, the focal length is roughly two time the length of the telescope.


If the primary mirror of a telescope have a focal length of 225 centimeters and the eyepiece has a focal length of 7.5 millimeters then what is the magnifying power of the telescope?

The magnifying power of a telescope is the focal length of the scope in millimeters, divided by the focal length of the eyepiece in millimeters. Focal length of scope: 225cm=2250mm Focal length of eyepiece: 7.5mm 2250/7.5= 300X


What will decreasing a telescope's eyepiece focal length?

The magnification of the telescope image is(focal length of the objective) divided by (focal length of the eyepiece).The focal length of the objective is fixed.Decreasing the focal length of the eyepiece increases the magnification of the image.(But it also makes the image dimmer.)


What is the focal length of a telescope's mirror if I use an eyepiece with a focal length of 26 mm and I get a magnification of 70x?

The focal length of the telescope's mirror can be calculated using the formula: Telescope focal length = Eyepiece focal length × Magnification = 26 mm × 70x = 1820 mm Therefore, the focal length of the telescope's mirror would be 1820 mm.