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NCERT Class 7 Mathematics Solutions: Chapter 15 – Visualising Solid Shapes Exercise 15.4 Part 1
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) .
Answer:
(i) A ball
Shape՚s name: Circle
Shadow:
(ii) A cylindrical pipe
Shape՚s name: Line
Shadow:
(iii) A book
Shape՚s name:
Shadow: Rectangle