mirror aur lens ke sign convention mein, negative sign aata hai jab image object ki taraf ban rahi ho ya fir lens concave ho... par ye minus sign kitni baar uljha deta hai! maine dekha hai ki sabse zyada galti tab hoti hai jab main real image ke liye 'v' positive lekar chalta hoon, aur phir focal length 'f' ko bhi positive rakh deta hoon concave mirror mein. mere upar wale kamre ki deewar par jo whiteboard lagi hai, uspe har baar practice karne ke baad bhi, kabhi-kabhi yehi confusion ek chhota sa dhabba chhod jaati hai.
#fantasy-sport#team-selection
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