Q3 of 14 Page 289

Examine if the following are true statements:

(i) The cube can cast a shadow in the shape of a rectangle.


(ii) The cube can cast a shadow in the shape of a hexagon.

A cube can cast shadow only in the shape of square. So hexagon is not possible. Since a surface of cube is square from any view (side or top view).

More from this chapter

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5

Give (i) an oblique sketch and (ii) an isometric sketch for each of the following:

(a) A cuboid of dimensions 5 cm, 3 cm and 2 cm. (Is your sketch unique?)


(b) A cube with an edge 4 cm long.

 1

What cross-sections do you get when you give a

(i) vertical cut


(ii) horizontal cut to the following solids?


(a) A brick


(b) A round apple


(c) A die


(d) A circular pipe


(e) An ice cream cone

 1

A bulb is kept burning just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow. (You may try to experiment first and then answer these questions).

 2

Here are the shadows of some 3-D objects, when seen under the lamp of an overhead projector. Identify the solid(s) that match each shadow. (There may be multiple answers for these!)