NCERT Exercise 9.4 - Mechanical Properties of Fluids
Question: Explain why (a) blow over paper to keep it horizontal, (b) water jets between fingers, (c) syringe needle controls flow better than thumb, (d) fluid through small hole gives backward thrust, (e) spinning cricket ball deviates.
Answer: All explained by **Bernoulli's principle, continuity, and momentum conservation**.
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