Question

When two spheres of different radius are placed on H.P both are touching each other and the line joining the centers is perpendicular to V.P. The front view will be ____________

(a) single circle

(b) two circles

(c) concentric circles

(d) intersecting circles

The question was posed to me in an online interview.

The question is from Projection of Spheres topic in section Projection of Solids of Engineering Drawing

Answer 1

Correct answer is (c) concentric circles

To elaborate: Given two spheres of different radius are placed on H.P touching each other, the line joining the centers is perpendicular to V.P so they both align in one line but due to a difference in radius it gives concentric circles from front view.