Arre, pressure difference calculate karne ke liye beta, Bernoulli aur continuity equation ko combine karna padta hai — woh classic formula A₁√(2ΔP/ρ) / √(A₁² - A₂²) yaad rakh lo. Par yahan twist aata hai: exam mein they often forget to account for the discharge coefficient 'C_d' in practical problems, isiliye neat answer galat ho jaata hai. Main isko aise samajhti hoon jaise mandir ke accounts mein 'donation' aur 'expense' alag-alag columns hain — theory ek taraf, practical adjustment dusri taraf, beta.
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