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20 marks, , Explain stress – strain curve., Derive bernoulli’s equation with neat and clean diagram., Write brief note on a angle of contact., With the help of graph explain anomalous expansion of, , water,, In Millikan’s oil drop experiment, what is the terminal, speed of an uncharged drop of radius 2.0 × 10–5 m and, density 1.2 × 103 kg m–3. Take the viscosity of air at the, temperature of the experiment to be 1.8 × 10–5 Pa s. How, much is the viscous force on the drop at that speed ?, Neglect buoyancy of the drop due to air.