Question

Example 9.10 An object is 30.0 cm from a spherical mirror,
along the central axis. The absolute value of lateral
magnification is 1/2. The image produced is inverted. What is
the focal length of the mirror?
mal endoth
noctite​

Answer 1

Answer:

M = 1/2

u = - 30 CM

v = ?

f = ?

M = - v/u = 1/2

- v / - 30 = 1/2

- v = - 15 v = 15cm

1/v + 1/u = 1/f

1/15 + ( -1/30 ) = 1/f

f = - 30cm

so, the focal length of the spherical mirror is 30 CM.