Answer:
u = 18 cm
Explanation:
given,
radius of curvature = 60 cm
magnification of mirror = 2.5
distance of object = ?
R = 2 f
f = R/2
f = 60/2 = 30 cm
[tex]m = -\dfrac{v}{u}[/tex]
[tex]2.5 = -\dfrac{v}{u}[/tex]
v = -2.5 u
now,
Using mirror formula
[tex]\dfrac{1}{f} = \dfrac{1}{v} + \dfrac{1}{u}[/tex]
[tex]\dfrac{1}{30} = \dfrac{1}{-2.5u} + \dfrac{1}{u}[/tex]
[tex]\dfrac{1}{30} = \dfrac{0.6}{u}[/tex]
u = 0.6 x 30
u = 18 cm
distance of object be equal to u = 18 cm
