Q. When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is
A) Polarized
B) Of longer wavelength
C) Of shorter wavelength
D) Of high intensity
Explanation
(c) When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is shorter wavelength, because
$Accuracy \propto \frac{1}{Wavelength}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.