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Most Important Selected Qs for JEE AdvancedPhysicsRay Optics

Paragraph: There is a spherical glass ball of refractive index ₁ and another glass ball of refractive index ₂ inside it as shown in figure. The radius of the outer ball is R₁ and that of inner ball is R₂ . A ray is incident on the outer surface of the ball at an angle i₁ . Question: Find the value of r₁

Options

  1. A⁻¹ ( R ₁ ₂ R₂ i ₁ )
  2. B⁻¹ ( R ₂ ₂ R₁ i ₁ )
  3. C⁻¹ ( R ₁ ₁ R₂ 1 i ₁ )
  4. D⁻¹ ( R ₂ ₁ R₁ i ₁ )

Correct answer

A. ⁻¹ ( R ₁ ₂ R₂ i ₁ )

Step-by-step solution

₁ ₂ i ₂= r ₂ ; ₁ ₂ R₁ R₂ i₁ ₁ = r ₂ ; r ₂= ⁻¹ ( R₁ ₂ R₂ i ₁ )

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