1.When a glass prism of refracting angle 60∘60^\circ60∘ is immersed in a liquid its angle of minimum deviation is 30∘30^\circ30∘. The critical angle of glass with respect to the liquid medium is:a.42∘42^\circ42∘b.45∘45^\circ45∘c.50∘50^\circ50∘d.52∘52^\circ52∘Login to continueOnly logged in users canattempt or see the solution.