NCERT Solutions for Class 7 Maths Exercise – 15.4

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

Q1. 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.

(i)

 

 

Solution:-

 

 

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

 

(ii)

 

 

Solution:-

 

 

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

 

(iii)

 

 

Solution:-

 

 

The shape of the shadow obtained from a book is rectangle

 

Q2. Here are the shadows of some 3-D objects, when seen under the lamp of an overhead projector . Identify the solid that the

match each shadow .

(i)

 

Solution:-

Cricket balls , water bottle cap , Disc.

 

(ii)

 

 

Solution:-

Die , chalk box etc.

 

(iii)

 

Solution:-

 

Birthday cap etc.

 

(iv)

 

Solution:-

Books , Keyboard , Mobile etc.

 

Q3. Examine if the following are true statements:

  • The cube can cast a shadow in the shape of a rectangle.

Solution:-

 

The above statements is true.

 

  • The cube can cast a shadow in the shape of a hexagon.

Solution:-

 

The above statements is false.

NCERT Solutions for class 7 English Poem 

NCERT Solutions for Class 7 Maths Exercise – 15.4 Chapter – 15 Visualising Solid Shapes Q1. A bulb is kept burning…