Answer:
[tex] \boxed{\sf Power \ of \ the \ lens = 7.5 \ D} [/tex]
Given:
Focal length of concave lens = -13.3 cm = -0.133 cm
To Find:
Power of lens
Explanation:
Formula:
[tex] \boxed{ \bold{Power \: of \: the \: lens = \dfrac{1}{Focal \: length \: of \: the \: lens \: (m)}}}[/tex]
By submitting value of focal length we get:
[tex] \sf Power \: of \: the \: lens = \frac{1}{0.133} \\ \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 7.5 \: Dioptres[/tex]
