May/June 2026 Paper 61

2026 · 4 questions · 21 parts · 40 marks

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1(a)1(b)1(c)1(d)

–/11 mks

2(a)(i)2(a)(ii)2(a)(iii)2(a)(iv)2(b)(i)2(b)(ii)2(c)(i)2(c)(ii)2(d)

–/11 mks

3(a)3(b)(i)3(b)(ii)3(c)3(d)3(e)3(f)

–/11 mks

–/7 mks

3(a)Easy2 marks

A student investigates the image produced by a lens. Refer to Figure 3.1.

Figure 3.1, an optical bench carrying an illuminated object, a lens a distance u from it and a screen a distance v from the lens

Figure 3.2, the front view of the illuminated object, a triangle inside a rectangular frame, with its height hO marked between two dashed lines

Measure the height

h_{O}

of the illuminated object in Figure 3.2. Give your answer in centimetres to the nearest millimetre. Include the unit.

Unit

3(b)(i)Easy1 mark

The student:

places the lens a distance $U$ = 20.0 cm from the illuminated object
adjusts the position of the screen until a focused image is formed on the screen.

On Figure 3.1, measure the distance

v

between the centre of the lens and the screen.

3(b)(ii)Easy1 mark

The diagram is

\frac{1}{5}

th actual size. Calculate the actual distance

V

between the centre of the lens and the screen.

3(c)Easy1 mark

The student measures the height

h_{1}

of the image on the screen.

h_{1}

= 3.3 cm Calculate the magnification

m_{1}

using the equation:

m_{1} = \frac{h _{1}}{h _{O}}

Give your answer to a suitable number of significant figures for this experiment.

3(d)Easy2 marks

The student:

moves the lens to a distance $V$ from the illuminated object
adjusts the position of the screen until a focused image is formed on the screen
measures the height $h_{2}$ of the image.

h_{2}

= 0.6 cm Calculate the magnification

m_{2}

using the equation:

m_{2} = \frac{h _{2}}{h _{O}}

Give your answer to a suitable number of significant figures for this experiment.

3(e)Medium2 marks

A student suggests that the product

m_{1} \times m_{2}

should be 1.00. State whether your results support this suggestion and justify your answer by reference to the results.

Your answer

3(f)Medium2 marks

In this type of experiment, it can be difficult to judge the screen position that produces the clearest image. Suggest two techniques to overcome this difficulty.

Your answer