Question

240 CBSE Sample Paper Science Cle 47. 41 A U2 02: While looking at the above ray diagrams, Uma concluded the followir (I) Medium 2 is denser than medium 1. (II) Bending of light depends upon the refractive index of medium. (III) Angle 03 is the critical angle for medium 1 (IV) This is the phenomenon of total internal reflection Which one of the above statements are incorrect? (a) (III) (b) (II) and (IV) (c) (III) and (IV) (d) (II), (III) and (IV) 48.​

Answer 1

Explanation:

Your question is quiet unclear, but take note of these:

(I) When light travels from a denser medium to a less dense medium, it bends away from the normal and vice versa

(II) Bending of light depends on the refractive index of the medium it is entering. If it is travelling from a medium of lower refractive index to a medium of higher refractive index, it will bend towards the normal

(III) Critical angle is the angle of incidence in the denser medium when the angle of refraction in the less dense medium is 90°

(IV) Total Internal Reflection occurs when the critical angle is exceeded