Question

Помогите пожалуйста :) Вычислите фокусное расстояние рассеивающей линзы, если расстояние от линзы до предмета 12см, а от линзы до изображения 5,5см

Answer 1

12,0-5,5=6,5
ответ растояние.......

Answer 2

Calculating the Focal Length of a Diverging Lens

To calculate the focal length of a diverging lens, we can use the lens formula:

1/f = 1/v - 1/u

Where: - f = focal length of the lens - v = image distance (distance from the lens to the image) - u = object distance (distance from the lens to the object)

Given Data

- Object distance (u) = 12 cm - Image distance (v) = -5.5 cm (negative because the image is formed on the same side as the object for a diverging lens)

Calculation

Using the lens formula, we can calculate the focal length (f):

1/f = 1/v - 1/u

1/f = 1/(-5.5) - 1/12

Now, let's calculate the value of 1/f using the given data.

Calculation Result

After performing the calculation, the value of 1/f is found to be -0.0909.

Final Step

To find the focal length (f), we take the reciprocal of 1/f:

f = -1 / 0.0909

Therefore, the focal length of the diverging lens is approximately -11 cm.

This calculation is based on the lens formula and the given object and image distances.