A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because [NCERT Exemplar]
A. friction between the layers of newspaper produces heat
B. air trapped between the layers of newspaper is a bad conductor of heat
C. newspaper is a conductor of heat
D. newspaper is at a higher temperature than the temperature of the surroundings
Answer:B
A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because [NCERT Exemplar]
A. friction between the layers of newspaper produces heat B. air trapped between the layers of newspaper is a bad conductor of heat C. newspaper is a conductor of heat D. newspaper is at a higher temperature than the temperature of the surroundings