Water falls from a height of 210,m. Assuming whole of energy due to fall is converted into heat rise

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10-1.Thermometry, Thermal Expansion and Calorimetry

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Water falls from a height of $210\,m.$ Assuming whole of energy due to fall is converted into heat the rise in temperature of water would be .......... $^oC$ $(J = 4.3 \,Joule/cal)$

A

$42$

B

$49$

C

$0.49$

D

$4.9$

Solution

(c) $\Delta \theta = 0.0023\,h = 0.0023 \times 210 = 0.483^\circ C \approx 0.49^\circ C$.

Standard 11

Physics

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