A slab consists of two parallel layers of two different materials of same thickness having therm....

Channel:
Subscribers:
443,000
Published on ● Video Link: https://www.youtube.com/watch?v=hf4X5sDo_FA



Duration: 3:17
3 views
0


Question A slab consists of two parallel layers of two different materials of same thickness having thermal conductivities \( K_{1} \) and \( K_{2} \). The equivalent conductivity of the combination is
(A) \( K_{1}+K_{2} \)
(B) \( \frac{K_{1}+K_{2}}{2} \)
(C) \( \frac{2 K_{1} K_{2}}{K_{1}+K_{2}} \)
(D) \( \frac{K_{1}+K_{2}}{2 K_{1} K_{2}} \)📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live




Other Videos By PW Solutions


2024-01-29Newtons law of cooling is a special case of....
2024-01-29In a process, 500 calories of heat is given to a system and at the same time 100 joules of work ....
2024-01-29The initial temperature of a body is \( 80^{\circ} \mathrm{C} \). If its temperature falls ....
2024-01-29The first law of thermodynamics is based on :-....
2024-01-29A bucket full of hot water cools from \( 75^{\circ} \mathrm{C} \) to \( 70^{\circ} \mathrm{C} \)....
2024-01-29If between wavelength \( \lambda \) and \( \lambda+\mathrm{d} \lambda, e_{\lambda} \) and \( a_{....
2024-01-29Four pieces of iron heated in a furnace to different temperatures show different colours li....
2024-01-29The lengths and radii of two rods made of same material are in the ratios \( 1: 2 \) and \( 2: 3....
2024-01-29The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by....
2024-01-29Two stars emit maximum radiation at wavelength 3600 Å and 4800 Å respectively. The r....
2024-01-29A slab consists of two parallel layers of two different materials of same thickness having therm....
2024-01-29Temperature of a body is \( 400^{\circ} \mathrm{C} \). Assuming the surrounding temperature....
2024-01-29\( 1 \mathrm{~kg} \) of ice at \( -10^{\circ} \mathrm{C} \) is mixed with \( 4.4 \mathrm{~kg} \)....
2024-01-29A body of mass \( 5 \mathrm{~kg} \) falls from a height of 30 metre. If its all mechanical energ....
2024-01-29A body of length \( 1 \mathrm{~m} \) having cross-sectional area \( 0.75 \mathrm{~m}^{2} \)....
2024-01-29\( 2 \mathrm{~kg} \) ice at \( -20^{\circ} \mathrm{C} \) is mixed with \( 5 \mathrm{~kg} \) wate....
2024-01-29The amount of heat required to convert \( 1 \mathrm{~g} \) of ice at \( 0^{\circ} \mathrm{C} \) ....
2024-01-29A quantity of heat required to change the unit mass of a solid substance, from solid state to li....
2024-01-29How much heat energy is gained when \( 5 \mathrm{~kg} \) of water at \( 20^{\circ} \mathrm{....
2024-01-29If specific heat of a substance is infinite, it means:....
2024-01-29When vapour condenses into liquid:....