Question

For a ray of light, which of the following statements holds true?
A. A ray is defined as the path of energy propagation
B. The wavelength for a ray of light in geometrical optics is assumed to be negligible, standing to zero
C. A ray of light travels in a straight line
D. All of the above

Answer 1

Correct Answer - D
A ray is defined as the path of energy propagation in the limit of wavelength tending to zero. It travels in a straight line and defined as the path of energy propagation.