46. When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index is ___ ?
(a) equal to that of glass
(b) less then one
(c) greater than that of glass
(d) less then that of glass
Answer : (a) equal to that of glass
No comments:
Post a Comment
Please provide your valuable feedback. Students, Parents, Teachers.