| ⇦ | 
| ⇨ |
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: - A wire of length L metre carrying a current I ampere is bent in the form
- When light of wavelength 300 nm falls on a photoelectric emitter,
- The potential energy of a 1 kg particle free to move along the x-axis is given by
- A ball is dropped from the root of a tower of height h
- Which of the following is the function of the step-up transformer?
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
- A wire of length L metre carrying a current I ampere is bent in the form
- When light of wavelength 300 nm falls on a photoelectric emitter,
- The potential energy of a 1 kg particle free to move along the x-axis is given by
- A ball is dropped from the root of a tower of height h
- Which of the following is the function of the step-up transformer?
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