Question

Rectilinear flow of heat stands for :
(A)
Heat flowing along X-direction
(B)
Heat flowing along both X and
Y directions
Heat flowing along all the three
X, Y and Z directions
(D)
None of these​

Answer 1

B) Heat flowing along both X and Y directions

Answer 2

Option “A” is correct that is heat flowing along X-direction.

• In rectilinear, the heat flows along a straight line that is along X- direction.

• The word rectilinear refers to motion in a straight line that is along one direction.

• In this motion, the line remains straight, and direction of velocity remains same.

Hope it helped...