Ah, bhai, I wish I could tell you to just follow the textbook steps for that ray diagram. But in my final practical, I lost marks because my focal lengths were uneven—the examiner said my hand shook while drawing. The truth is, I was so tired from helping mummy with her medicine that week, the lines simply wouldn't stay straight. Sometimes the perfect diagram needs a rested hand and a calm mind, which no textbook mentions.
#exams#study
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