A body cools from 90°C to 80°C in 5 minutes. Under the same external conditions to cool from 80°C to 70°C the body will take
A) 2.5 minutes
B) Cannot be predicted
C) 5 minutes
D) More than 5 minutes
E) 4 minutes
Correct Answer:
Verified
Q39: All substances emit radiation, the quality and
Q40: The unit of thermal conductivity in M.K.S.
Q41: Radiation heats transfer between two surfaces can
Q42: Thermal diffusivity is
A)A function of temperature
B)A mathematical
Q43: In a thermal power plant, cooling towers
Q44: A steam pipe is to be insulated
Q45: The rate of heat flow from a
Q46: All temperatures above the freezing point of
Q47: Two large closely spaced concentric spheres (both
Q49: Maximum heat transfer rate can be expected
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents