It is desired to cast the image of a lamp magnified 5 times upon a wall 4 m distant from the lamp. What kind of spherical mirror is required and what is its position?
concave mirror of radius 1.67 m which is 1 m away from lamp
convex mirror of radius 0.83 m which is 1 m from lamp
convex mirror of radius 1.4 m which is 2.2 m from lamp
concave mirror of radius 2.1 m which is 5.1 m from mirror
Comments
Leave a comment