in natural convection fluid moves under the influence of a) Buoyant forces arising from changes in density. b) Changes in fluid pressure produced by external work. c) Surface tension forces. d) Elastic forces.
Answer (1)
26th Apr, 2020
Hello Mrunali !
In natural convection, the fluid motion occurs by natural means such as buoyancy , the fluid motion is not generated by any external source (like a pump, fan, suction device, etc.)
So , your answer is option A.
You can check detailed information about this in the following PDF File,
https://www.sfu.ca/~mbahrami/ENSC%20388/Notes/Natural%20Convection.pdf
Hope it helps !
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