Physics, asked by Anonymous, 9 months ago

EXPLAIN IN DETAIL, WHY REFLECTION THROUGH PRISM IS IN ANTICLOCKWISE DIRECTION​

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Answered by Ekaro
6

12th/Physics

Ray Optics

Answer :

Refractive index of prism = 2

We have to find net deviation of ray light.

Angle of incidence at point A,

  • i₁ = 90° - 30° = 60°

Deviation at point A :

⭆ d = 180° - 2i

⭆ d = 180° - 2(60)

d = 60° (CW)

Angle of incidence at point B = 6°

Applying snell's law, we get

➠ n₁sin i = n₂sin r

➠ 2 (sin6°) = (1) sin r

➠ 2 (0.104) = sin r

➠ r = sin‾¹ (0.208)

r = 12°

Deviation at point B :

⭆ d' = 12° - 6°

d' = 6° (ACW)

Net deviation :

➤ ∆ = d - d'

➤ ∆ = 60°(CW) - 6°(ACW)

∆ = 54° (CW)

Hence, (4) is the correct answer.

Cheers!

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