stephliu6993 stephliu6993
  • 20-02-2024
  • Physics
contestada

An object is placed in front of a concave mirror of focal length 20cm. The image formed is 3 times the size of the object. Calculate two possible distances of the object from the mirror.

a) 30 cm and 60 cm
b) 20 cm and 40 cm
c) 15 cm and 45 cm
d) 10 cm and 30 cm

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