Question -
Answer -
In the given situation,the object is virtual and the image formed is real.
Object distance,┬аu┬а= +12 cm
(a)┬аFocal length of theconvex lens,┬аf┬а= 20 cm
Image distance =┬аv
According to the lensformula, we have the relation:
Hence, the image is formed7.5 cm away from the lens, toward its right.
(b)┬аFocal length of theconcave lens,┬аf┬а= тИТ16 cm
Image distance =┬аv
Accordingto the lens formula, we have the relation:
Hence,the image is formed 48 cm away from the lens, toward its right.