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

Rajasthan Board RBSE Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 Textbook Exercise Questions and Answers.

Rajasthan Board RBSE Solutions for Class 7 Maths in Hindi Medium & English Medium are part of RBSE Solutions for Class 7. Students can also read RBSE Class 7 Maths Important Questions for exam preparation. Students can also go through RBSE Class 7 Maths Notes to understand and remember the concepts easily. Students can access the data handling class 7 extra questions with answers and get deep explanations provided by our experts.

RBSE Class 7 Maths Solutions Chapter 15 Visualising Solid Shapes Ex 15.4

Question 1.
A bulb is kept liting just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadows. (You may try to experiment first and then answer these questions.)
(i)
RBSE Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 1
Answer:
When light falls just above the solid:
A ball; the shadow will be like a circle.

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

(ii)
RBSE Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 2
Answer:
When light falls just above the solid :
A cylinder pipe; the shadow will be like a rectangle.

(iii)
RBSE Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 3
Answer:
When light falls just above the solid :
A book; the shadow will be nearly 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 answer for these!)
(i)
A circle
RBSE Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 4
Answer:
Sphere

(ii)
A square
RBSE Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 5
Answer:
Cube

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

(iii)
A triangle
RBSE Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 6
Answer:
Cone

(iv)
A rectangle
RBSE Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.4 7
Answer:
Cuboid

Question 3.
Examine if the following are true statements :
(i) The cube can cast a shadow in the shape of a rectangle.
Answer:
True

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

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

Bhagya
Last Updated on June 14, 2022, 12:46 p.m.
Published June 14, 2022