10-1.Thermometry, Thermal Expansion and Calorimetry
medium

જ્યારે માણસ એક મિનિટમાં $100\,g$ બરફ ખાય, તો તેને કેટલો પાવર મળશે ? બરફની ગુપ્ત ઉષ્મા $80$ કેલેરી/ગ્રામ. 

Option A
Option B
Option C
Option D

Solution

Mass of ice eaten by the man per second.

$m =\frac{100}{60}=\frac{5}{3}=\frac{5}{3} g / m$

Latent heat of ice,

$L =80 cal / g$

Therefore, energy required per second by the man in eating the ice, i.e., power developed by the man,

$= mL =\frac{5}{3} \times 80 cal / s$

$=\frac{50 \times 80}{3} \times 4.2 J / s =560 W$

Standard 11
Physics

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