Answer :

Using Snell’s law,

where n1 is the refractive index of medium 1, n2 is the refractive index of medium 2, i is the angle of incidence and r is the angle of refraction.

How do we measure r? We measure it from the normal in the direction in which the original ray would pass undeflected.

Note that i is always less than 90°. Hence, is always positive. Now, n2 is also positive but n1 is negative. Hence, sin(i) is also negative. Hence, r must be in the 3rd or 4th quadrant. The only time r is in the 3rd or 4th quadrant is in option (a).

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

(a) Show using a Physics - Board Papers

If light passes nPhysics - Exemplar

An infinitely lonPhysics - Exemplar

The mixture a purPhysics - Exemplar

A jar of height hPhysics - Exemplar

The optical densiPhysics - Exemplar