Q43 of 112 Page 311

We can see the sun because it is glowing. How are we able to see the moon?

We are able to see the moon because the light of sun falls on moon and is reflected onto the earth. Hence, we are able to see the moon.


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41

Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain.

 42

What makes things visible to us? Why cannot we see a book which is placed (a) behind a wooden screen, and (b) in a dark room?

 44

Name the two types of reflection of light. Which type of reflection makes us see an object from all directions?

 45

A wall reflects light and a mirror also reflects light. What difference is there in the way they reflect light?