Dioptre power of an concave lens of 10 cm focal length is_______________?
A10 dioptre
B1 / 10 dioptre
C1 / 10 dioptre
D10 dioptre
Correct answer
A. 10 dioptre
Explanation
10 dioptre is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.