Where should an object be placed in front of a convex lens so as to obtain its real, inverted and magnified image?

Where should an object be placed in front of the mirror so as to obtain its virtual, erect and magnified image ?

A convex lens has a focal length of 20 cm. Where should an object be placed in front of this convex lens so as to obtain an image which is real, inverted and same size as the object? Draw the ray diagram to show the formation of image in this case.

Where should an object be placed in front of a concave mirror to obtain an image, which is real, inverted and reduced in size?

Where should an object be placed in front of a convex lens in order to get : an enlarged real image

Where should an object be placed in front of a convex lens in order to get : enlarged virtual image ?

Answer the following questions: The focal length of a concave mirror is 15cm. Where should on object be placed in front of this mirror so as to obtain an image which is real, inverted and of the same size as the object? Justify your answer.