*According to the CBSE Syllabus 2023-24, this chapter has been renumbered as Chapter 13.

NCERT Solutions for Class 7 Maths Exercise 15.4 Chapter 15 Visualising Solid Shapes is an essential study resource as it offers a wide range of questions that test students’ understanding of concepts. This exercise of NCERT Solutions for Class 7 Maths Chapter 15 contains the topic related to ‘another way is by shadow play’. The expert faculty at BYJU’S solved the problems step-by-step with neat explanations to help students comprehend easily.

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes – Exercise 15.4

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Access Other Exercises of NCERT Solutions Class 7 Maths Chapter 15 – Visualising Solid Shapes

Exercise 15.1 Solutions

Exercise 15.2 Solutions

Exercise 15.3 Solutions

Access Answers to NCERT Solutions Class 7 Maths Chapter 15 – Visualising Solid Shapes Exercise 15.4

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).

(i)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 61

Solution:

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 62

The shape of the shadow obtained from the ball is a circle.

(ii)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 63

Solution:

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 64

The shape of the shadow obtained from the cylindrical pipe is a rectangle.

(iii)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 65

Solution:

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 66

The shape of the shadow obtained from the book is a rectangle.

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!)

(i)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 67

Solution:

Cricket ball, water bottle cap, Disc

(ii)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 68

Solution:

Die, chalk box etc.

(iii)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 69

Solution:

Birthday cap, pizza slice etc.

(iv)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 70

Solution:

Book, keyboard, mobile etc.

3. Examine if the following are true statements:

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

Solution:

The above statement is true.

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

Solution:

The above statement is false.

Also, explore – 

NCERT Solutions for Class 7 Maths

NCERT Solutions for Class 7 

NCERT Solutions


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