Multiple Choice
A drawing is placed 40 cm in front of a thin lens.If a virtual image forms at a distance of 50 cm from the lens,on the same side as the drawing,what is the focal length of the lens?
A) -45 cm
B) 75 cm
C) 90 cm
D) 200 cm
E) +45 cm
Correct Answer:
Verified
Correct Answer:
Verified
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