A ray of light makes an angle of incidence of 42.8° at the boundary of glycerine and flint glass. If the refractive indices of these materials are 1.47 and 1.72 respectively, through what angle is the ray
deviated?​

I'm having some difficulty seeing the diagram clearly.but the question says there's a net inward force on the object.so we know right away,  from newton's 2nd law of motion, thatthat baby is accelerating.  it doesn't even matter which way thenet force is pointing.  if there's any net force, then either theobject's speed or else its direction must be changing.

The answer to the question is (a)