4+4=8
+ +
9-4=5 plus 1 =6
" "
13 8
When a light ray travels parallel to the principal axis after refraction passed through a point which is called as principal focus pache vaat Karis jadav now busy
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4+4=8
+ +
9-4=5 plus 1 =6
" "
13 8
Verified answer
When a light ray travels parallel to the principal axis after refraction passed through a point which is called as principal focus pache vaat Karis jadav now busy