Question

Four student S P, Q, R and S traced the path of a ray of light passing through a glass slab for an angle of incidence 40° and measured the angle of refraction. The values as measured by them were 18°; 22°; 25° and 30° respectively. The student who has performed the experiment methodically is; A. P; B. Q; C. R; D. S(Delhi - 2015)

Answer 1

Answer:

I don't understand your question dude ☺️

Answer 2

angle of refraction be r

Refractive index of glass n=1.33

Sin i/sin r =1.33

sin r =sin40/1.33

r= 28.9

Hence S is more close to actual answer and within the error of experiment

student who has performed the experiment methodically is S