an object is placed at a distance of 40 cm in front of a concave mirror having focal length 20 cm find the position and nature of image
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the position of the nature of the image is 20 cm far
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Concave mirror
u = -40 cm , f= -20 cm , v = ? Nature = ?
According to mirror formula
1v+1u=1f⇒1v+1−40=1−20
⇒1v−140=−120
⇒1v=−120+140=−2+140=−140
v = -40 cm
Position : Image is formed 40 cm in front of the concave mirror.
Nature : Image is real and inverted .
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