_A composite slab has two layers of different materials with thermal conductivities k‚Äö√á√Ö and k‚Äö√á√á. If each layer has the same thickness, then the equivalent thermal conductivity of the slab will be$?

k‚Äö√á√Ö k‚Äö√á√á

(k‚Äö√á√Ö + k‚Äö√á√á)

(k‚Äö√á√Ö + k‚Äö√á√á)/ k‚Äö√á√Ö k‚Äö√á√á

2 k‚Äö√á√Ö k‚Äö√á√á/ (k‚Äö√á√Ö + k‚Äö√á√á)

_A composite slab has two layers of different materials with thermal c

1.	_A composite slab has two layers of different materials with thermal conductivities k‚Äö√á√Ö and k‚Äö√á√á. If each layer has the same thickness, then the equivalent thermal conductivity of the slab will be$?
A.	k‚Äö√á√Ö k‚Äö√á√á
B.	(k‚Äö√á√Ö + k‚Äö√á√á)
C.	(k‚Äö√á√Ö + k‚Äö√á√á)/ k‚Äö√á√Ö k‚Äö√á√á
D.	2 k‚Äö√á√Ö k‚Äö√á√á/ (k‚Äö√á√Ö + k‚Äö√á√á)
Answer» E.

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_A composite slab has two layers of different materials with thermal conductivities k‚Äö√á√Ö and k‚Äö√á√á. If each layer has the same thickness, then the equivalent thermal conductivity of the slab will be$?

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