A lens has a focal length of 10 cm. Where the object should be placed if the image is to be 40 cm in the positive direction from the lens?
A. 12 cm
B. 40 cm
C. 13 cm
D. 0.075
Answer:C
A lens has a focal length of 10 cm. Where the object should be placed if the image is to be 40 cm in the positive direction from the lens?
A. 12 cm B. 40 cm C. 13 cm D. 0.075