Główna zawartość

Power of lens

Harry broke his pair of glasses in a Quidditch match, and sees an optician for a new pair. He's prescribed glasses that are convex lenses of focal length 40, space, start text, c, m, end text each.

What is the power of Harry's glasses in units of dioptres (start text, D, end text)?

(Choice A)
minus, 2, point, 5, space, start text, D, end text
(Choice B)
plus, 0, point, 025, space, start text, D, end text
(Choice C)
plus, 2, point, 5, space, start text, D, end text
(Choice D)
plus, 0, point, 40, space, start text, D, end text

Fizyka - 12 klasa (Indie)

Kurs: Fizyka - 12 klasa (Indie) > Rozdział 9

Power of lens

Fizyka - 12 klasa (Indie)

Kurs: Fizyka - 12 klasa (Indie) > Rozdział 9

Zadanie