Szklana soczewka dwuwypukła ma ogniskową 25 cm. W odległości 50 cm przed nią umieszczono przedmiot o.... Question from @klaudiaaa

August 2018 1 42 Report

Szklana soczewka dwuwypukła ma ogniskową 25 cm. W odległości 50 cm
przed nią umieszczono przedmiot o wysokości 3cm. W jakiej odległości od soczewki powstanie obraz? Jaką wysokość miał otrzymany obraz? Podaj 3 jego cechy.
Błagam o pomoc!!! Z góry Dziękuję!

zbigniew63 Dane:
f=25[cm]=0,25[m]
x- odległość przedmiotu od soczewki,
x=50[cm]=0,5[m]
szukane:
y=? -odległość obrazu od soczewki
P=? - powiększenie
Wzór na soczewkę dwuwypukłą:
1/x+1/y =1/f to y=(fx)/(x-f)
obliczenia:
y=(0,25 x 0,5)/(0,5-0,25) to y=0,5[m]
powiększenie:
P=y/x to P=0,5/0,5=1
Powstały obraz jest:rzeczywisty,odwrócony, o takich samych rozmiarach.
otrzymany obraz ma wysokość 3[cm] x 1= 3[cm]

2 votes Thanks 0

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Czy struktura gatunkowa drzew w naszych lasach jest właściwa czy niewłaściwa? Uzasadnij. Proszę o pomoc i z góry ogromnie dziękuję.

Proszę przetłumaczyć, ale nie z translatora. It was soon after this that the old wolf died fighting a lynx. Later the she-wolf went hunting for meat and she found old One Eye is body near the lynx is cave. She did not and was too dangerous to fight.

Proszę przetłumaczyć, ale nie z translatora Only the grey cub opened his eyes again. The other four died before One Eye could find food.

Proszę przetłumaczyć, ale nie z translatora. Then there was a noise and the she-wolf came running from the trees. At once the weasel left the cub to attack the she - wolf. It was a big mistake.

Proszę przetłumaczyć, ale nie z translatora. He came to a stream and looked into the water. But when he put his foot on it, it was cold and his foot went through it! Then he heard a cry and saw a small yellow animal under his foot. It was a young weasel.

Proszę przetłumaczyć, ale nie z translatora, For a minute or two the grey cub was afraid to move. He sat and looked around him. Then he got up and began walking. He walked into things or fell over them, and he hurt his feet on stones and his head on trees.

Proszę przetłumaczyć, ale nie z translatora. One day while the she-wolf was out hunting, the grey wolf cub went to the mouth of the cave. He looked out at the world for the first time. The light was very bright, but he saw the trees and the river. He saw the mountain and the sky above it.

Proszę przetłumaczyć, ale nie z translatora. Every day One Eye went out to hunt, but there were no animals and there was no meat for him to bring back to the cave. The cubs became weak and tired, and soon all they could do was sleep.

Proszę przetłumaczyć, ale nie z translatora. Four of the cubs had red hair like the she-wolf, but one was grey, like One Eye. This cub was also the strongest, but like most animals in the wild he soon learned what being very hungry was like.

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