Question

Помогите пожалуйста! В рассеюващей линзе получено изображение на расстоянии 10 см от линзы. Найти фокусное расстояние линзы если предмет находится на расстоянии 50 см от линзы.

Answer 1

1/d-1/f=-1/F
1/0.5м-1/0,1м=1/F
-8=-1/F
F=0.125м=12,5 см

Answer 2

Finding the focal length of a lens

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

1/f = 1/v - 1/u

Where: - f is the focal length of the lens - v is the image distance from the lens - u is the object distance from the lens

In this case, we are given that the image distance (v) is 10 cm and the object distance (u) is 50 cm.

Substituting these values into the lens formula, we can solve for the focal length (f):

1/f = 1/10 - 1/50

To simplify the equation, we can find a common denominator:

1/f = (5 - 1)/50

1/f = 4/50

Now, we can invert both sides of the equation to solve for f:

f = 50/4

Simplifying further:

f = 12.5 cm

Therefore, the focal length of the lens is 12.5 cm.