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A large concrete slab 1 m thick has one dimensional instantaneous temperature distribution
T = 4 - 10x + 20x2 + 10x3
Where T is temperature in °C and x is distance in m from one face towards the other face of the wall. If the slab material has thermal diffusivity of 2 X 10-3m2/hr, what is the rate of change of temperature at the other face of the wall for the same instant?
  • a)
    0.1°C/hr
  • b)
    0.2°C/hr
  • c)
    0.3°C/hr
  • d)
    0.4°C/hr
Correct answer is option 'B'. Can you explain this answer?
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A large concrete slab 1 m thick has one dimensional instantaneous temperature distributionT = 4 - 10x + 20x2 + 10x3Where T is temperature in °C and x is distance in m from one face towards the other face of the wall. If the slab material has thermal diffusivity of 2 X 10-3m2/hr, what is the rate of change of temperature at the other face of the wall for the same instant?a) 0.1°C/hrb) 0.2°C/hrc) 0.3°C/hrd) 0.4°C/hrCorrect answer is option 'B'. Can you explain this answer?
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