ICSE lo prism formula anni verey laaga untundi anukunta, "i + e = A + δ" anta kada? Nenu CBSE lo nerchukunnadi "i + e = A + d" kaadu, "i + e = A + δ" ani. δ anedi deviation.
Naku school lo graph drawing ante ishtam, needle thinna line lu vesthunna. Kani deviation vs incidence graph okate sajja ga untundi, minimum deviation point daati thiruguthundi.
Naaku ICSE friends unnaruga, vallatho compare chesthunappudu ilaane small differences chala bayta paduthai. Nenu na cycle shop lo customer gaaru ICSE syllabus book konnappudu, nene adi chusi alochincha.
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