Question

A line of length 15 cm touching the vertical plane and perpendicular to it held at a distance of 20 cm away from horizontal plane and 5 cm away from the profile plane. Which of the following is false?

(a) Front view will be point

(b) The line is parallel to horizontal and profile plane

(c) The length of the line in side view is 15 cm

(d) One end of line is on the horizontal plane

I have been asked this question in semester exam.

This intriguing question comes from Projection of Line Perpendicular to one of the Plane in chapter Projection of Lines of Engineering Drawing

Answer 1

Right answer is (d) One end of line is on the horizontal plane

To explain I would say: As with knowledge of views we can say the views from different sides and next if a line is perpendicular to one plane of projection planes it will parallel to other planes. Given one end is on vertical plane so the other end can’t be on a perpendicular plane.