Question

Statement 1: When the average radius gives an error, log mean radius is used.

Statement 2: Log mean radius is given by  r^L= ( r^0– r^i )/(ln(r^0/r^i))

(a) True, False

(b) True, True

(c) False, False

(d) False, True

I had been asked this question in an interview for job.

My question is taken from Unit Operations topic in section Heat Transfer by Conduction, Convection and Radiation of Food Engineering

Answer 1

Right option is (b) True, True

To explain I would say: Both the statements are true.