Question

angle of refraction is the smallest for ____and the highest for ________​

Answer 1

Answer:

The smallest angle of incidence at which total internal reflection occurs is called the critical angle, qc. Using Snell's law, n1 Sinqθ i = n2 Sin(90°) = n2.

In general, total internal reflection takes place at the boundary between two transparent media when a ray of light in a medium of higher index of refraction approaches the other medium at an angle of incidence greater than the critical angle. For a water-air surface the critical angle is 48.5°.

Answer 2

Angle of refraction is the smallest for red and the highest for violet.

• Every colour has a different wavelength.
• Every colour bends differently from all other colours.
• The wavelength of red colour is the longest and it bends the least.
• Hence, it has the smallest angle of refraction.
• The wavelength of violet colour is the longest and it bends the most.
• Hence, it has the highest angle of refraction.
• so, angle of refraction is the smallest for red and the highest for violet.

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