Answer: 140cm
Explanation:
Radius of curvature r = 2f
Where f is the focal point
f = 70cm, therefore
r =2 x 70 = 140cm
Answer:
The radius of curvature is 9.35 cm.
Explanation:
Given:
u = -5 cm
v = -70 cm
The radius of curvature of the mirror can be obtained from the expression:
[tex]\frac{1}{v} +\frac{1}{u} =\frac{2}{R} \\-\frac{1}{v} -\frac{1}{u} =\frac{2}{R} \\-\frac{1}{70} -\frac{1}{5} =\frac{2}{R} \\-0.014-0.2=\frac{2}{R} \\R=-9.35cm[/tex]
