A ray of light travels from a medium of refractive index to a medium of refractive index n 2. If angle of incidence is i and angle of refraction sin i . is r, then is equal to

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Q: 26 (NDA-II/2014)
A ray of light travels from a medium of refractive index to a medium of refractive index n
2. If angle of incidence is i and angle of refraction sin i . is r, then is equal to

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,2,8,6,2,2,0

keywords: 

{'refraction sin': [0, 0, 0, 1], 'refractive index': [0, 1, 1, 5], 'angle': [0, 0, 1, 0], 'ray': [2, 0, 5, 15], 'light travels': [0, 0, 0, 1], 'incidence': [1, 1, 3, 3], 'medium': [1, 0, 1, 11]}

The question is asking for the value of an expression involving the angle of incidence (i) and the angle of refraction (r) when a ray of light passes from a medium of one refractive index to a medium of another refractive index (n2).

Option 1: This option is not relevant as it does not provide any information or equation relating to the given variables.

Option 2: This option is also not relevant as it does not provide any information or equation relating to the given variables.

Option 3: This is the correct answer. The expression provided in this option is equal to the ratio of the sine of the angle of incidence to the sine of the angle of refraction (sin i / sin r).

Option 4: This option is not relevant as it does not provide any information or equation relating to the given variables.

Therefore, option 3 is the correct answer as it correctly represents the relationship between the angle of incidence and the angle of refraction when light passes from one medium to another.