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!)

Solution:

(i) A ball or sphere will give a shadow of a circle

(ii) A cube-shaped object such as dice will give the shadow of a square

(iii) An ice-cream cone or a birthday cap will give the shadow of a triangle

(iv) A book or a cuboid shape object will give the shadow of a rectangle

☛ Check: Class 7 Maths NCERT Solutions Chapter 15

Video Solution:

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.

Maths NCERT Solutions Class 7 Chapter 15 Exercise 15.4 Question 2

Summary:

When we see shadows of solids like ball, cube, geometry box etc under a lamp of an overhead projector they will look like (i) A ball or sphere will give a shadow of a circle (ii) A cube-shaped object such as dice will give the shadow of a square (iii) An ice-cream cone or a birthday cap will give the shadow of a triangle (iv) A book or a cuboid shape object will give the shadow of a rectangle.

☛ Related Questions:

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