Question

Оптическая сила линзы равна 1,2 дптр. Чему равно фокусное расстояние этой линзы?

Answer 1

D=1/F    F=1/D=1/1,2=0,83 м

Answer 2

Calculating the Focal Length of a Lens

The optical power of a lens (D) is given by the formula D = 1/f, where f is the focal length of the lens. In this case, the optical power of the lens is 1.2 diopters.

Using the formula D = 1/f, we can calculate the focal length (f) of the lens.

Calculating the Focal Length: - D = 1/f - 1.2 = 1/f - f = 1/1.2 - f = 0.8333 meters

So, the focal length of the lens is 0.8333 meters.