A Convenience's Store Clerk Observes at Shopper 4 M in Front

question 63

Multiple Choice

A convenience's store clerk observes at shopper 4 m in front of a convex mirror.The image of the shopper is located 1.5 m behind the mirror.The focal length of the mirror is

• A)-2.5 m
• B)-2.4 m
• C)-0.67 m
• D)-1.1 m
• E)none of the above

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