An object is placed between C and F in front of a concavemirror with a focal len

Question

An object is placed between C and F in front of a concavemirror with a focal length of 10 cm. What is the position ofits image in relation to the mirror and what are itscharacteristics? A) = 10 cm, virtual, smaller than object B) > 20 cm, real, larger than object
C) = 10 cm, real, smaller than object D) = 20 cm, virtual, same size as the object E) = 20 cm, real, same size as the object Why/? An object is placed between C and F in front of a concavemirror with a focal length of 10 cm. What is the position ofits image in relation to the mirror and what are itscharacteristics? A) = 10 cm, virtual, smaller than object B) > 20 cm, real, larger than object
C) = 10 cm, real, smaller than object D) = 20 cm, virtual, same size as the object E) = 20 cm, real, same size as the object Why/?

Explanation / Answer

u=15cm f=15cm 1/v+1/u=1/f 1/v+1/15=1/10 v=30cm magnification m=-v/u=-30/15 Its negative as. > 20 cm, real, larger than object
Hence we get by it.

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