Question

$\rm \red{What \: sign \: will \: taken \: for \: the \: height \: of \: pin-point \: sized \: object \: /image \: \green{(extremely \: small \: object/image) } \red{?}}$
$\sf \underline \blue{NOTE : } \: \rm \orange{HEIGHT \: OF \: OBJECT \: EXACTLY \: COINCIDES\: WITH \: PRINCIPAL - AXIS \: OF \: THE \: SPHERICAL \: MIRROR .}$
Thanks in Advance !

Answer 1

Image distance of concave mirror is always negative except in one case when the object is between focus and pole ...., Hope it is helpful

Answer 2

Answer:

See this attachment file...