Question

Which of the following is correct
1.All distances should be measured from pole
2.Distances measured in the direction of incident light are positive
3.Distances measured opposite to the direction of incident light are negative
4.All of the above ​

Answer 1

Answer:

option 4

Explanation:

All of the above

Answer 2

Answer:

4.all the above

Explanation:

these are the sign convection rules for the lens