Visualising Solid Shapes

Question
CBSEENMA8003314

Which are prisms among the following?

Solution

Since, a prism is a polyhedron having two of its faces congruent and parallel, where as other faces are parallelogram.
∴ (i) No, a nail is not a prism.
   (ii) Yes, unsharpened pencil is a prism.
   (iii) No, table weight is not a prism.
    (iv) Yes, box is a prism.