Question

Фокусное расстояние линзы 0,5 м. Найдите ее оптическую силу?

Answer 1

Оптическая сила   величина, обратная фокусному расстоянию.
$D= \frac{1}{F} = \frac{1}{0.5} =2Dptr$

Answer 2

Calculating Optical Power of the Lens

To find the optical power of the lens with a focal length of 0.5 m, we can use the formula:

Focal length (f) = 1 / Optical Power (F)

Using the given focal length (f = 0.5 m), we can calculate the optical power (F) as follows:

F = 1 / f

F = 1 / 0.5

F = 2 diopters (D).

Therefore, the optical power of the lens with a focal length of 0.5 m is 2 diopters (D).