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Approximating the eye as a single thin lens 2. 70 cm from the retina, find the focal length of the eye when it is focused on an object at a distance of 265 cm?

Sagot :

The focal Length of the eye is 0.37cm.

The retina, which is always 2.70 cm away from the lens, serves as the image's primary imaging medium. Image distance is 2.70 cm as a result.

The object is located 265 cm away from the eye's lens.

Based on lens formula:

[tex]\frac{1}{f} = \frac{1}{u} + \frac{1}{v}[/tex]

where the object distance is u, the image distance is v, and the focal length is f.

Consequently, u is 265.00 cm and v is 2.70 cm.

[tex]\frac{1}{f} = \frac{1}{265} + \frac{27}{10}[/tex]

[tex]\frac{1}{f} = \frac{7165}{2650}[/tex]

[tex]f = \frac{2650}{7165}[/tex]

f = 0.37

Thus, the focal length of the eye is 0.37cm.

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