A student uses spactles of focal length -2.5m
Answers
Answered by
1
Answer:
Your answer is above ☝☝☝☝☝☝☝☝☝
Attachments:
Answered by
1
Answer:
The critical angle is the angle of incidence where the angle of refraction is 90∘
The light must travel from an optically more dense medium to an optically less dense medium.
The critical angle s related to the refractive index as
θc=sin−1(n2/n1)
rearranging
n2/n1 = sin(θc)
given θc= 30∘
by substituting the values
n2/n1 =sin(30∘) = o.5
Attachments:
Similar questions