ISRO Mechanical & Aerospace 2020 - Question 20

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The external surface of a wall of 3 m height, 5 m width and 0.5 m thickness is at a temperature of 2 °C. If a heat loss of 150 W from the room is measured across the wall, find the inner wall temperature? The thermal conductivity of wall material can be taken as 1 W/m.K

  • A. 280 K
  • B. 285 K
  • C. 268 K
  • D. 282 K

Answer: A. 280 K

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