what kind of mirror can a focal length is - 20 CM
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Concave mirror can have a focal length ( -20 cm) as the object is placed in front of the mirror on -x axis (left side of cartesian plane).
Hope it helps
Concave mirror can have a focal length ( -20 cm) as the object is placed in front of the mirror on -x axis (left side of cartesian plane).
Hope it helps
atul34567:
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Answer:
Concave mirror has negative focal length.that is -20cm
hope it helps
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