MHT CET202121 Sep 2021Evening ShiftPhysicsRay OpticsActual
The refractive index of glass is 1.5 and that of water is 1.33 . The critical angle for a ray of light going from glass to water is
Options
- A⁻¹ ( 4 7 )
- B⁻¹ ( 5 8 )
- C⁻¹ ( 8 9 )
- D⁻¹ ( 2 3 )
Correct answer
C. ⁻¹ ( 8 9 )
Step-by-step solution
aligned & _ g =1.5= 3 2 _ w =1.33= 4 3 & _ w _ g = _ g _ w = 3 2 3 4 = 9 8 & C= 1 _w _ g = 8 9 & C = ⁻¹ ( 8 9 ) aligned