Answer
Verified
462.6k+ views
Hint: In this question, we will use some basic points of thermal conduction. To solve this question, we have to remember that both air and wool are bad conductors of heat.
Formula used: $Q = \dfrac{{KA({T_1} - {T_2})t}}{x}$.
Complete step-by-step solution -
As we know that the woolen fibres encloses a large amount of air in them. Hence, the woolen clothes contain a large amount of trapped air in them.
We also know that both air and wool are bad conductors of heat.
The thermal conductivity is given by the relation:
$ \Rightarrow Q = \dfrac{{KA({T_1} - {T_2})t}}{x}$, here the proportionality constant K is called coefficient of thermal conductivity of the given material. Its value depends on the nature of the material.
The thermal conductivity of wool = 0.04 and air = 0.024.
The small coefficient of thermal coefficient prevents the loss of heat from our body due to conduction. Air does not allow the body heat to flow out, as the result of which we feel warm in woolen clothes.
Note: Whenever we ask such types of questions we should remember some basic points of thermal conductivity. We will relate the quantities with the formula of thermal conductivity and then by getting the small coefficient of thermal conductivity. We will get our answer.
Formula used: $Q = \dfrac{{KA({T_1} - {T_2})t}}{x}$.
Complete step-by-step solution -
As we know that the woolen fibres encloses a large amount of air in them. Hence, the woolen clothes contain a large amount of trapped air in them.
We also know that both air and wool are bad conductors of heat.
The thermal conductivity is given by the relation:
$ \Rightarrow Q = \dfrac{{KA({T_1} - {T_2})t}}{x}$, here the proportionality constant K is called coefficient of thermal conductivity of the given material. Its value depends on the nature of the material.
The thermal conductivity of wool = 0.04 and air = 0.024.
The small coefficient of thermal coefficient prevents the loss of heat from our body due to conduction. Air does not allow the body heat to flow out, as the result of which we feel warm in woolen clothes.
Note: Whenever we ask such types of questions we should remember some basic points of thermal conductivity. We will relate the quantities with the formula of thermal conductivity and then by getting the small coefficient of thermal conductivity. We will get our answer.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Which are the Top 10 Largest Countries of the World?
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Difference Between Plant Cell and Animal Cell
Give 10 examples for herbs , shrubs , climbers , creepers
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Write a letter to the principal requesting him to grant class 10 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE