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when you solve a numerical based on myopia and hypermetropia how do we know if the infinity symbol should be used with a negative(- ∞) or a positive (+ ∞) sign??

when you solve a numerical based on myopia and hypermetropia how do we know if the infinity symbol should be used with a negative(- ∞) or a positive (+∞) sign??

Grade:10

1 Answers

b saikiran
21 Points
4 years ago
if it is measured along tyhe normel itis +ve an if opposite to the normal -ve it is measured along frome the pole of a lens 

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