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An isosceles trapezium of refracting material of refractive index 2 and dimension of sides being 5cm, 5cm, 10cm and 5cm. The angle of minimum deviation by this when light is incident from air and emerges in air is:

(B) 45° 

(C) 30° 

(D) 60°

1 Answer

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by (69.4k points)
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Best answer

Correct option: (C) 30°

Explanation:

If we complete the trapezium as shown It becomes an equilateral triangle

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