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प्रश्न
A ray of light when incident upon a thin prism suffers a minimum deviation of 39°. If the shaded half portion of the prism is removed, then the same ray will ______.
पर्याय
suffer a deviation of 19.5°
suffer a deviation of 39°
not suffer any deviation
will be totally internally reflected
MCQ
रिकाम्या जागा भरा
उत्तर
A ray of light when incident upon a thin prism suffers a minimum deviation of 39°. If the shaded half portion of the prism is removed, then the same ray will suffer a deviation of 19.5°.
Explanation:
δ = (μ - 1)A
δ ∝ A
∴ `delta_2/delta_1 = "A"_2/"A"_1`
∴ `delta_2/delta_1 = ("A"//2)/"A" = 1/2`
∴ `delta_2 = delta_1/2`
`delta_2 = 39/2`
= 19.5°
shaalaa.com
Refraction Through a Prism
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