Question

The angle for which the angle of refraction is equal to ${90}^{\circ }$ for given pair of media is called

• A. Glancing angle
• B. Critical angle
• C. Reflected angle
• D. None of these

Answer 1

The correct option is B Critical angle

$\begin{array}{c}\text{Critical angle !- It is the angle of incidence for which}\\ \text{angle of refraction is}{90}^{\circ }\text{.}\end{array}$