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Capillary rise h for liquid in tube of radius r:
Ah = r
Bh = γ/r
Ch = ρgh
Dh = 2γ cos θ / (ρ g r)
Answer & Solution
Correct answer: D. h = 2γ cos θ / (ρ g r)
Jurin's law: h = 2γ cos θ / (ρ g r). θ = contact angle. Water in glass: θ ≈ 0, rises. Mercury in glass: θ ≈ 140°, depresses. Inverse relation: thinner tube, higher rise.
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