1.Light is incident at an angle iii on a glass slab. The reflected ray is completely polarised. The angle of refraction isa.90∘−i90^\circ - i90∘−ib.180∘−i180^\circ - i180∘−ic.90∘+i90^\circ + i90∘+id.iiiLogin to continueOnly logged in users canattempt or see the solution.