🎴 Flashcard Mode
Density of a fluid - class-XI
Card1 / 25
Mastered0
Review0
QuestionClick to flip
By cooling two liquids of equal volume from temperature $60 ^ { \circ } \mathrm { C }$ to $50 ^ { \circ } \mathrm { C }$ in same conditions time required are 324 and 810 sec respectively. If ratio of specific heat of both are 3:4. Then ratio of their. densities (water equivalent of calorimeter is negligible ):
AnswerClick to flip back
A
8 /15
💡 Explanation:
Newton's law of cooling states that the rate of heat loss is proportional to temperature difference, or time t is proportional to (mc / A). By setting up the ratio of times for identical volume, specific heat, and surface area conditions, the density ratio works out to 8/15.