Physics 0625 · IGCSE · Light

Light — practice question

(a)[2]

State what the term total internal reflection means.

(b(i))[3]

Calculate the greatest value of x for which total internal reflection can happen.

(b(ii))[2]

Calculate the speed of light in the liquid medium.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The whole of the light is reflected” …