NEET2021Physics-Newton's Law of Cooling
NEET 2021 Physics Newton's Law of Cooling MCQ Question
Type: MCQ-numerical-Medium-Class 11
A cup of coffee cools from 90°C to 80°C in t minutes, when the room temperature is 20°C. The time taken by a similar cup of coffee to cool from 80°C to 60°C at a room temperature same at 20°C is :
A
13/10 t
B
13/5 t
C
10/13 t
D
5/13 t
Correct Answer
Option B
Detailed Explanation
Using Newton's law of cooling, the rate of cooling is proportional to the temperature difference. Calculate the time using the given conditions.
Found an issue with this question?
Related Questions
More from 2021
Match Column - I with Column - II. Choose the correct answer from options given below:
Nitrogen CycleBotany
Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:
Plant ReproductionBotany
Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O₂ and 2 g H₂ confined in a total volume of one litre at 0°C is: [Given...
Ideal Gas LawChemistry