Question

Which one of the following is not a parameter used in either the thin-lens equation or the magnification equation?

a) Focal length
b) Object distance
c) Refractive index
d) Wavelength

Answer 1

The parameter that is not used in either the thin-lens equation or the magnification equation is wavelength.

Step-by-step explanation:

In the thin-lens equation and the magnification equation, the parameter that is not used is d) Wavelength. The thin-lens equation relates the object distance (do), image distance (di), and focal length (f) of a lens, while the magnification equation calculates the magnification (m) of the image formed by the lens. The parameters used in both equations are the object distance, focal length, and image distance, but not the wavelength.