Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

Olympiad workbook

Exam: Olympiad workbook
Subject: NSEP
Chapter: Thermal Properties of Matter

Olympiad workbook · NSEP · Thermal Properties of Matter

Consider a composite slab consisting of two different materials...

Consider a composite slab consisting of two different materials having equal thickness and equal area of cross-section. The thermal conductivities are K and 2 K respectively. The equivalent thermal conductivity of the composite slab is

Options

A $\frac{2 \mathrm{~K}}{3}$
B $\sqrt{2} \mathrm{~K}$
C3 K
D $\frac{4 \mathrm{~K}}{3}$

Correct answer

D. $\frac{4 \mathrm{~K}}{3}$

Step-by-step solution

No Solution

Practice Thermal Properties of Matter on Quantrex Academy →

More from Thermal Properties of Matter

A small pond of depth 0.5 m deep is exposed to a cold winter with outside temperature of… Olympiad workbook Two identical rods made of two different metals A and B with thermal conductivities K_ A… Olympiad workbook A steel cooking pan has copper coating at its bottom. The thickness of copper coating is… Olympiad workbook Two identical rooms in a house are connected by an open doorway. The temperatures in the… Olympiad workbook A metallic wire of length l is held between two supports under some tension. The wire is… Olympiad workbook A sphere and a cube having equal surface area are made of the same material. The two are… Olympiad workbook Plots of intensity (I) of radiation emitted by a black body versus wavelength ( λ ) at… Olympiad workbook The temperature of an isolated black body falls from T_1 to T_2 in time t . Then, t=C x… Olympiad workbook Full Thermal Properties of Matter list All Olympiad workbook PYQs