Q1. Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain.
No, we cannot see the objects inside the room but we might see the objects outside the room. An object is visible to us when light reaches it, gets reflected and reaches our eyes. Inside the darkroom there is no light present to be reflected from the objects and reach our eyes and therefore we won't be able to see them but if there is light present outside the room and if it is reflected from objects outside the room and if this light reaches our eyes then we would be able to see the objects outside the room.