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CBSE Class 10 Answered

why should we use canadabalsm to glued lenses
Asked by rohitlostlife | 29 Jan, 2020, 12:05: PM
answered-by-expert Expert Answer
Canada balsam has high optical quality and have refractive index same as that of crown glass i.e 1.55
Canad balsam becomes invisible when it becomes dry. Hence used to fuse the optical elements. 
Thus, canada balsam is used to glue two lenses. 
Apart from lenses, other applications of Canada balsam is seen in construction of Nicol prism, beam splitter, bonding two prisms etc. 
Answered by Shiwani Sawant | 29 Jan, 2020, 04:50: PM
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