Question

The phase difference between incident ray and reflected ray of light is

• A. ${90}^{\circ }$
• B. ${120}^{\circ }$
• C. ${150}^{\circ }$
• D. ${180}^{\circ }$

Answer 1

Answer: (D)

${180}^{\circ }$

$\begin{array}{c}\text{(If is a theory question.)}\\ \text{In reflection the phase difference between incident}\\ \text{ray and reflected ray is}\pi \text{, i.e.}{180}^{\circ }\\ \text{Hence, (D) is correct option.}\end{array}$