Physics, asked by sunitaroy8689, 11 months ago

two thin lenses are put close to eachother,focal length of the combination

Answers

Answered by utsav970959

3

focal length of the combination, F=F1+F2

Answered by radhikap1984

6

Answer:

f1 + f2 = F...

Explanation :

1)less than small focal lenght

2) more than bigger focal length

3) equal to arthmatical average of focal lenght

4) equal to geometrical average of focal length

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