question_answer

In your laboratory you trace the path of light rays through a glass slab for different values of angle of incidence \[\mathbf{(}\angle \mathbf{i)}\] and in each case measure the values of the corresponding angle of refraction \[\mathbf{(}\angle r\mathbf{)}\] and angle of emergence\[\mathbf{(}\angle e\mathbf{)}\].

On the basis of your observations your correct conclusion is:

(a) \[\angle i\] is more than \[\angle r,\] but nearly equal to \[\angle e\]

(b) \[\angle i\] is less than \[\angle r,\] but nearly equal to \[\angle e\]

(c) \[\angle i\] is more than \[\angle e,\] but nearly equal to \[\angle r\]

(d) \[\angle i\] is less than \[\angle e,\] but nearly equal to \[\angle r\]

Answer:

(a) \[\angle i\] is more than \[\angle r,\] but nearly equal to \[\angle e\]