Physics 0625 · IGCSE · Light

Light — practice question

Fig. 6.1 illustrates an object O that is $5.0\,\text{cm}$ from the centre of a thin converging lens L. Lens L has a focal length of $3.0\,\text{cm}$. Fig. 6.1 is drawn to full scale.
(a(i))[1]

On Fig. 6.1, mark the principal axis with P.

(a(ii))[1]

On Fig. 6.1, put a letter X at one focal point.

(a(iii))[2]

On Fig. 6.1, draw two rays from O to show where the tip of the image formed by the lens is located.

(a(iv))[3]

In Table 6.1, tick the right-hand column beside every term that describes the image in (a)(iii). The table includes: diminished, enlarged, inverted, real, same size, upright, virtual.

(b)[2]

Describe how the new image differs from the image in (a)(iv).

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: Principal axis labelled P

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI