Math, asked by rs70770104, 10 months ago

30. The image of an object formed by a lens is of magnification -1. If the distance between
the object and its image is 60 cm, what is the focal length of the lens? If the object is
moved 20 cm towards the lens, where would the image be formed? State reason and also
draw a ray diagram in support of your answer.
OR
2 a l . ..mam fuam in the need of light becomes half of its value in air
(5)​

Answers

Answered by talibsaif
0

Answer:

persentage kese nikalege

Answered by ramakishorerao1974
0

then ask your maths teacher

Similar questions