μ=sin(2A)sin(2δm+A)
∵μ=cot(2A)
∴cot(2A)=sin2Asin(2δm+A)
cos2A=sin(2δm+A)
2π−2A=2δm+A
δm=π−2A
The refracting angle of a prism is A , and refractive index of the material of the prism is cot( A 2). The angle of minimum deviation is
NEET UG 2015 — Physics Optics
2015mcqmedium
The refracting angle of a prism is A , and refractive index of the material of the prism is cot(2A). The angle of minimum deviation is
Official previous-year question
Held on 30 Apr 2015 · Verified 9 Jul 2026.
Options
- A
180o−3A
- B
180o−2A
- C
900−A
- D
1800+2A
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