NEET Solved Paper 2019 Question 18

Question: The unit of thermal conductivity is: [NEET 5-5-2019]

Options:

A) $ WmK^{1} $

B) $ ~Wm^{1}K^{1} $

C) $ Jm{K^{b1}} $

D) $ Jm^{1}K^{1} $

Show Answer

Answer:

Correct Answer: B

Solution:

$ H=\frac{kA}{\ell }({\theta_1}-{\theta_2}) $

$ k=\frac{H\ell }{A\theta } $

$ =\frac{W.m}{m^{2}K} $

$ =Wm^{1}K^{1} $