COMEDK 2022 | Heat and Thermodynamics Question 50 | Physics

Consider a compound slab consisting of two different materials having equal lengths, thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is

$$\sqrt2$$K

$$3$$K

$$\frac{4}{3}$$K

$$\frac{2}{3}$$K

COMEDK 2021

MCQ (Single Correct Answer)

-0

In an adiabatic process with the ratio of two specific heat, $$\gamma=\frac{3}{2}$$, pressure is increased by $$\frac{2}{3}$$%, then decrease in the volume will be

$$\frac{4}{9}$$%

$$\frac{2}{3}$$%

$$4$$%

$$\frac{9}{4}$$%

COMEDK 2021

MCQ (Single Correct Answer)

-0

For an ideal gas, coefficient of volume expansion is given by

$$\frac{1}{p}$$

$$\frac{1}{pV}$$

$$\frac{1}{R}$$

$$\frac{1}{T}$$

COMEDK 2021

MCQ (Single Correct Answer)

-0

Which of the following is not a green house gas?

CH$$_4$$

CO$$_2$$

O$$_3$$

H$$_2$$O

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