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Reflective sheet materials used as thermal insulating material have ___________ reflectivity and __________ emissivity.

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in Construction & Building Materials by (190k points)
Reflective sheet materials used as thermal insulating material have ___________ reflectivity and __________ emissivity.

(a) High, high

(b) High, low

(c) Low, low

(d) Low, high

This question was posed to me in examination.

Origin of the question is Thermal Insulation topic in division Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials

1 Answer

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Right answer is (b) High, low

Easiest explanation: Reflective sheet materials used as thermal insulating material have high reflectivity and low emissivity. Because of this property, it offers high heat resistance.

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