(b) An achromatic doublet of focal length 20 cm is made of different kinds of glass shown below. Find the focal length of each lens, stating whether it is convergent or 15| divergent. Type of glass Туре 1 Туре II Туре Ш Holue 1.527 Pred 1.515 1.634 1.617 1.725 1.718 An achromatic doublet of focal length 20 cm is made of different kinds of glass shown below. Find the focal length of each lens, stating whether it is convergent or divergent.
(b) An achromatic doublet of focal length 20 cm is made of different kinds of glass shown below. Find the focal length of each lens, stating whether it is convergent or 15| divergent. Type of glass Туре 1 Туре II Туре Ш Holue 1.527 Pred 1.515 1.634 1.617 1.725 1.718 An achromatic doublet of focal length 20 cm is made of different kinds of glass shown below. Find the focal length of each lens, stating whether it is convergent or divergent.
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![(b) An achromatic doublet of focal length 20 cm is made of different kinds of glass
shown below. Find the focal length of each lens, stating whether it is convergent or
divergent.
[15]
Type of glass
Туре I
Туре II
Туре Ш
Hplue
1.527
Hred
1.515
1.634
1.617
1.718
1.725
An achromatic doublet of focal length 20 cm
is made of different kinds of glass shown
below. Find the focal length of each lens,
stating whether it is convergent or divergent.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8fa1f377-524c-45f7-8b22-c5972c6484fc%2Fdb08aa0c-5548-4419-9384-5bba70ae806e%2Flx0abq_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(b) An achromatic doublet of focal length 20 cm is made of different kinds of glass
shown below. Find the focal length of each lens, stating whether it is convergent or
divergent.
[15]
Type of glass
Туре I
Туре II
Туре Ш
Hplue
1.527
Hred
1.515
1.634
1.617
1.718
1.725
An achromatic doublet of focal length 20 cm
is made of different kinds of glass shown
below. Find the focal length of each lens,
stating whether it is convergent or divergent.
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