When Abhishek looked at a lighted torch through an object he could see a faint glow, but not the torch. The object is
In a dark night, how does a torch enables us to see objects?
Question 20 (a)
Boojho planned an activity to observe an object A through pipes as shown in figure, so that he could see objects which he could not directly see. How many mirrors should he use to see the objects?