Please help with physics light/prism lab When light of a certain wavelength pass
ID: 1425277 • Letter: P
Question
Please help with physics light/prism lab
When light of a certain wavelength passes through a prism whose apex angle is 60.0 degree, the angle of minimum deviation is measured to be 41.0 degree. Calculate the refractive index of the prism for this wavelength. (Express your answer to 2 decimal places.) Suppose your prism was not positioned for minimum deviation for the spectral line being measured. How would this affect your experimental value for the refractive index, n? The experimental value obtained for n would be larger than the actual value. The experimental value obtained for n would be smaller than the actual value. According to Cauchy's Dispersion Relation, which one of the following statements correctly describes the relationship between index of refraction, n, and wavelength, lambda? n decreases as lambda increases n increases as lambda increasesExplanation / Answer
1.
for minimum deviation to occur,
n = sin {(A+D)/2 } /sin (A/2)
= sin {(60+41)/2} / sin (60/2)
= sin (50.5)/sin 30
= 1.54
Answer: 1.54
2)
If pridm is not set for minimum deviation, Value of D will be more
So, value of sin {(A+D)/2} will increase which will result in increase in value of n
Answer: option 1
3)
n decreases as wavelength increases
Answer: option 1