Question

(ii) Which of the following is a unitless quantity

(a) Magnification (b) Focal length (c) Power of lens (d) Sum of focal length of two lens​

Answer 1

Answer:

(a) Magnification is an unitless quantity.

Explanation:

Magnification is the ratio of height of image to the height of object.Hence, its unit gets cancelled .

Answer 2

Answer:

hope it helps

please mark me as brain least and give me lots of thanks