NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 are part of NCERT Solutions for Class 7 Maths. Here we have given NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4.

Board CBSE
Textbook NCERT
Class Class 7
Subject Maths
Chapter Chapter 15
Chapter Name Visualising Solid Shapes
Exercise Ex 15.4
Number of Questions Solved 3
Category NCERT Solutions

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

Question 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):
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 21
Solution:

  1. a circle.
  2. a rectangle.
  3. a rectangle.

Question 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!)
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 22
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 23

Solution:

  1. → Sphere, cylinder
  2. → Cube, cuboid (of the square end)
  3. → Cone, the prism of the triangular base
  4. → Cylinder, the prism of the square base

Question 3.
Examine if the following are true statements:

  1. The cube can cast a shadow in the shape of a rectangle.
  2. The cube can cast a shadow in the shape of a hexagon.

Solution:

  1. True, the cube can cast a shadow in the shape of a rectangle.
  2. False, the cube can not cast a shadow in the shape of a hexagon.

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