Essential requirement for the transfer of heat from one body to another is
A) Both bodies must be solids
B) Both bodies must be in contact
C) Temperatures of the two bodies must be different
D) One of the bodies must have internal source of heat generation
E) All of the above
Correct Answer:
Verified
Q3: The overall co-efficient of heat transfer is
Q4: A fur coat on an animal will
Q5: The wagelength of X-rays is
A)6 to 100000
Q6: There are two spheres of copper the
Q7: Which dimensionless number can be used for
Q9: The ratio of specific heats of a
Q10: The reflectance of a black body is
A)less
Q11: A dimensionless heat transfer coefficient which gives
Q12: If thermal conductivity of a material of
Q13: Dynamic similarity is the similarity of
A)Shape
B)Forces
C)Velocities
D)Effective dimensions
E)None
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