Question

In Newton's law of cooling experiment, we plot a graph of do/dt against the temperature difference (0-00) The graph is

O A curve passing through the origin
O A straight line passing through the origin
O A straight line having an intercept on o y axis
O A straight line having an intercept on the temperature axis​

Answer 1

A straight line having an intercept on y axis.

• According to Newton's law of cooling, the rate at which hot bodies change is directly inversely related to the temperature difference between the body and its surroundings.
• A copper calorimeter with a wooden lid that has two holes for a thermometer and a stirrer, an open, double-walled vessel, two celsius thermometers (each with a minimum count of 0.5 C or 0.1 C), a stopwatch or stop clock, a heater or burner, liquid (water), a clamp stand, two rubber stoppers with holes, strong cotton thread, and a beaker are all parts of a Newton's law of cooling.
• The graph of the aforementioned equation will not pass through the origin since the slope of the equation is negative and will be displaced by a constant.

Hence, option 3 is correct that is 'A straight line having an intercept on y axis.'

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