Question

Why is it advised to wear more layers of woollen clothes rather than just one thick woollen cloth to keep us warm in winter?​

1. Air trapped between layers of woollen clothes acts as an insulator of heat​

2. Layers of clothes produce heat​

3. Air trapped between layers of woollen clothes acts as a conductor of heat​

• A. 2 only​
• B. Both 2 and 3​
• C. Both 1 and 2​
• D. 1 only​

Answer 1

The correct option is D 1 only​