In order to determine the focal length of a concave mirror, a student obtained the sharp image of a distant tree on a screen. In order to obtain a sharp image of a window grill of the laboratory on the same screen, in which direction should the screen be moved ?

In order to determine the focal length of a concave mirror, a student

1.	In order to determine the focal length of a concave mirror, a student obtained the sharp image of a distant tree on a screen. In order to obtain a sharp image of a window grill of the laboratory on the same screen, in which direction should the screen be moved ?
Answer» very CLOSE to the mirror very far AWAY from the mirror slightly NEARER to the mirror slightly FARTHER away from the mirror Solution :NA