Question

While doing an experiment on plotting the temperature vs. time graph of hot water as it cools, we can get a good graph (1) only by noting the temperature of hot water every 30 seconds throughout. (2) only by noting the temperature of hot water every 1 minute throughout. (3) by noting the temperature of hot water every 1 minute to start with and every 2 minutes later on. (4) by noting the temperature of hot water every 2 minutes to start with and every 1 minute later on.

Answer 1

 Answer: (1) We can get a good graph when readings are taken after short intervals of time. Therefore, we can get a good graph by noting the temperature of hot water every 30 seconds throughout.