Physics
The angle of deviation becomes minimum when:
- i1 = r1
- i1 = r2
- i1 = i2
- r2 = i2
Refraction Plane Surfaces
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Answer
i1 = i2
Reason — The angle of deviation becomes minimum when angle of incidence (i1) becomes equal to the angle of emergence (i2). This phenomenon occurs when the light ray inside the prism is incident at the minimum deviation angle and is known as the angle of minimum deviation.
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Related Questions
The cross section of the prism is :
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- square
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- parabolic
The angle of prism A is given as:
- r1 - r2
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The minimum angle of deviation is given by :
- none of these
In position of minimum deviation, the refracted ray inside the prism is …………… to its base:
- normal
- inclined at 45°
- parallel
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