When 106 small drops coalesce to make a new larger drop then the drop
Correct answer: C. Temperature increases
- A. Density increases
- B. Density decreases
- C. Temperature increases
- D. Temperature decreases
Explanation
When 106 small drops coalesce to form a larger drop, the total surface area decreases. The surface energy associated with the surface tension of the drops is reduced, and this energy is released as heat, leading to an increase in temperature. Therefore, the correct answer is that the temperature increases. The density of the drop does not change since it is a property of the material itself, independent of its shape or size. As such, options A and B are incorrect. Option D is incorrect because the process of coalescing generally releases energy, which would increase, not decrease, the temperature.
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