Ncert Solutions For Class 7 Maths Ex 15.4

Ncert Solutions For Class 7 Maths Chapter 15 Ex 15.4

 Q.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).

 23

 Solution:

24

 

Q.2. Here are the shadows of some 3-D objects, when seen under the lamp of the overhead projector. Identify the solid (s) that match each shadow. (There may be multiple answers for these)

25

Solution:

26

 

Q.3. Examine if the following are true or false:

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

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

Solution:

(a)True

(b)False