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)

Solution:

When the light of a bulb falls just above the solids, the shapes we obtain are:

(i) For a ball, the shadow will be a circle

(ii) For a cylindrical pipe, the shadow is a rectangle

(iii) For a book, the shadow is a rectangle

☛ Check: NCERT Solutions for Class 7 Maths Chapter 15

Video Solution:

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)

Maths NCERT Solutions Class 7 Chapter 15 Exercise 15.4 Question 1

Summary:

A bulb is kept burning just right above the following solids. (i) For a ball, the shadow will be a circle, (ii) For a cylindrical pipe, the shadow is a rectangle, (iii) For a book, the shadow is a rectangle. A rough sketch of the shadow is shown above.

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