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3.2.2 Refraction of light

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Question 2

A ray of light travels from medium 1 (with refractive index $n_1$ ) towards the boundary with medium 2 (with refractive index $n_2$ ). The angle of incidence in medium 1 is $\theta_i\,$ and the critical angle for the boundary is $θc\theta_c$ .

Which set of conditions is necessary for total internal reflection to occur at the boundary?

$n_1 < n_2$ and $θi<θc\theta_i < \theta_c$

$n_1 < n_2$ and $θi>θc\theta_i > \theta_c$

$n_1 > n_2$ and $θi<θc\theta_i < \theta_c$

$n_1 > n_2$ and $θi>θc\theta_i > \theta_c$

Markscheme

3.2.2 Refraction of light Questions

IGCSE
Physics
3.2.2 Refraction of light

100 exam-style questions on CIE IGCSE Physics 3.2.2 Refraction of light. Each one has a worked solution and a mark scheme showing where the marks go.

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