| ⇦ | 
| ⇨ |
The unit of thermal conductivity is
Options
(a) Wm⁻¹K⁻¹
(b) JK⁻¹
(c) WmK
(d) JK
Correct Answer:
Wm⁻¹K⁻¹
Explanation:
The heat current related to difference of temperature across the length l of a conductor of area A is
dH/dt = KA / ℓ ∆T (K=Coefficient of thermal conductivity)
.·. K = ℓ dH / A dt ∆T
Unit of K = W m⁻¹ K⁻¹.
Related Questions: - The wetability of a surface by a liquid depends primarily on
- In a vessel, the gas is at a pressure P. If the mass of all the molecules
- The depth at which the effective value of acceleration due to gravity is g/4
- The ratio of amplitude of magnetic field to the amplitude of electric field for
- The horizontal range and maximum height attained by a projectile are R and H,respectively
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Physical World and Measurement
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The wetability of a surface by a liquid depends primarily on
- In a vessel, the gas is at a pressure P. If the mass of all the molecules
- The depth at which the effective value of acceleration due to gravity is g/4
- The ratio of amplitude of magnetic field to the amplitude of electric field for
- The horizontal range and maximum height attained by a projectile are R and H,respectively
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Physical World and Measurement (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply