An object of size 7 0 cm is placed at 27 cm in front of a concave mirror of focal - Science - Light - Reflection and Refraction

Question

An object of size 7 0 cm is placed at 27 cm i
n front of a concave mirror of focal length 18 cm At what
distance from the mirror should a screen be placed, so that a sharp
focused image can be obtained? Find the size and the nature of the
image

Meetu Misra · Accepted Answer

Object distance, u = −27 cm Object height, h = 7 cm Focal length, f = −18 cm According to the mirror formula,

The screen should be placed at a distance of 54 cm in front of the given mirror

The negative value of magnification indicates that the image formed is real

The negative value of image height indicates that the image formed is inverted

An object of size 7.0 cm is placed at 27 cm i n front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed, so that a sharp focused image can be obtained? Find the size and the nature of the image.