question_answer

A ray of light strikes a plane water-airinterface from within the water at an angleof incidence i. Which one of the following statements is correct?

A)  If i is 90°, the angle of refraction will bethe critical angle

B)  If i is equal to the critical angle, thereflected and refracted rays will be atright angles to each other

C)  If i is less than the critical angle, all thelight is refracted and the angle of efraction is greater than i

D)  If i is less than the critical angle, somelight is refracted and the angle ofreflection is less than the critical angle

Correct Answer: D

Solution :

                The amended statements are as follow If i is \[{{T}^{2}}\], the ray will not refract. If i=C, the reflected and refracted rays will be at \[{{r}^{3}}\] to each other. If i < C , most of the light is refracted. Some light will always be reflected. If i<C, the light is refracted at angle > i in the air