Insulation with Blankets – Rankers Physics

Heat Transfer - Conduction and Convection: Practice Problem & Solution

Assertion (A): Two thin blankets put together are less warmer than a single blanket of double the thickness. Reason (R): Thickness increases because of vacuum layer enclosed between the two blankets.  
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Heat Transfer - Conduction and Convection. Understanding the underlying formula is key to arriving at the correct answer below:

Two thin blankets are warmer than one thick one due to trapped air layers acting as insulation. No vacuum forms. Both assertion and reason are incorrect.

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