Question

3. Вогнутое сферическое зеркало с радиусом кривизны R = 80 см дает действительное изображение предмета на рас- стоянии f = 80 см от зеркала. Определите расстояние между предметом и зеркалом. Помогите пожалуйста ​

Answer 1

ответ находиться в фотке

Answer 2

Calculation of the Distance between the Object and the Mirror

To determine the distance between the object and the mirror, we can use the mirror equation:

1/f = 1/v - 1/u

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

In this case, we are given that the radius of curvature of the mirror (R) is 80 cm, and the image distance (v) is 80 cm. We need to find the object distance (u).

Since the mirror is concave (curved inward), the focal length (f) is positive and equal to half the radius of curvature:

f = R/2 = 80 cm / 2 = 40 cm

Substituting the given values into the mirror equation:

1/40 = 1/80 - 1/u

Simplifying the equation:

1/u = 1/40 - 1/80

1/u = (2 - 1)/80

1/u = 1/80

Therefore, the object distance (u) is 80 cm.

Answer

The distance between the object and the mirror is 80 cm.