KCET2025PhysicsRay Optics
A ray of light passes from vaccum into a medium of refractive index n . If the angle of incidence is twice the angle of refraction, then the angle of incidence in terms of refractive index is
Options
- ASin ⁻¹ ( n 2 )
- B2 Cos ⁻¹ ( n 2 )
- C2 Sin ⁻¹ ( n 2 )
- DCos ⁻¹ ( n 2 )
Correct answer
B. 2 Cos ⁻¹ ( n 2 )
Step-by-step solution
aligned & 1 i=n i 2 & 2 i 2 i 2 =n i 2 & 2 i 2 =n & i 2 = n 2 & i 2 = ⁻¹ ( n 2 ) & i=2 ⁻¹ ( n 2 ) aligned