Two thin lenses of focal length F1 and F2 are separated by a distance D between them if the combination satisfies the condition for no chrom
Yes sir, i understand the query related to your question::
Focal length of this chromatic lens is given as follows:
1/f=1/f1 + 1/f2
1/f=( f1+f2)/(f1*f2)
F=F1*F2/(F1+F2)
Still if you find any query related to this ask me in comments . The question you have asked is from 10th science gseb board .
I can easily ask my doubts