A diverging lens of focal length f = -9.6 cm forms images of an object situated

Question

A diverging lens of focal length f = -9.6 cm forms images of an object situated at various distances.
(a) If the object is placed p1 = 28.8 cm from the lens, locate the image, state whether it's real or virtual, and find its magnification.Please show all steps and use as precise numbers as possible. Thanks.
q = cm
M =

(b) Repeat the problem when the object is at p2 = 9.6 cm.
q = cm
M =

(c) Repeat the problem again when the object is 4.80 cm from the lens.
q = cm
M =

Explanation / Answer

1/f = 1/di +1/do =>-1/8.7 = 1/di + 1/17.3 =>1/di = -1/8.7 - 1/17.3 = -0.17275 =>di = -5.789cm Manification = -di/do = 5.789/17.3 = 0.3346

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