QQuestion
Write Snell’s law of refraction of light.
OR
Write two characteristics of the image of an extended object formed when it is placed in between the optical centre and focus of a thin convex lens.
✓Answer
Snell’s law : The ratio of the sine of the angle of incidence (i) to the sine of the angle of refraction (r) is a constant, for the light of a given colour and for the given pair of media.
Mathematical form: μ = sin i / sin r
OR
Characteristics of the Image
- Upright (erect) and Virtual
- Enlarged
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