Newtons Law Of Cooling

A cup of coffee cools from $90%5E%7B%5Ccirc%7D%5Ctext%7BC%7D$ $to$ $80%5E%7B%5Ccirc%7D%5Ctext%7BC%7D$ in $t$ minutes, when the room temperature is $20%5E%7B%5Ccirc%7D%5Ctext%7BC%7D.$ The time taken by a similar cup of coffee to cool from $80%5E%7B%5Ccirc%7D%5Ctext%7BC%7D$ $to$ $60%5E%7B%5Ccirc%7D%5Ctext%7BC%7D$ at room temperature same at $20%5E%7B%5Ccirc%7D%5Ctext%7BC%7D$ is:

1.	$%5Cdfrac%7B10%7D%7B13%7Dt$	2.	$%5Cdfrac%7B5%7D%7B13%7Dt$
3.	$%5Cdfrac%7B13%7D%7B10%7Dt$	4.	$%5Cdfrac%7B13%7D%7B5%7Dt$

High-Yield Trend

Questions
2 MCQs

Official Solution

Official Solution

1.	$%5Cfrac%7B7%7D%7B4%7DT$	2.	$%5Cfrac%7B3%7D%7B2%7DT$
3.	$%5Cfrac%7B4%7D%7B3%7DT$	4.	$T$

Newtons Law Of Cooling

High-Yield Trend

Questions 2 MCQs

Official Solution

Official Solution

Questions
2 MCQs