IGCSE Physics Waves Specimen Paper

WAVES
(INCLUDING
LIGHT)

, 3.0 WAVES

SPECIMEN PAPER 2023
19 Light travels at a speed of 2.0 × 108 m / s in a glass block.
In the glass, the wavelength of the light is 4.0 × 10–7 m.
What is the frequency of the light?
A 2.0 × 10–15 Hz
B 1.3 × 10–2 Hz
C 80 Hz
D 5.0 × 1014 Hz
20 In a shallow tank, a water wave moves through a barrier with a narrow gap.
The diagram shows the waves on the left-hand side and the right-hand side of the
barrier.



water
wave




Which term describes the effect shown?
A reflection
B dispersion
C refraction
D diffraction

21 Which statement describes monochromatic light?
A light that never diffracts
B light that has a single frequency
C light that spreads out when shone through a glass prism
D light that travels at the same speed in all materials


22 An object is placed 8.0 cm from a thin converging lens of focal length 5.0 cm.

converging lens
object
F


5.0 cm
8.0 cm

Which statement about the image formed by the lens is correct?
A The image is real and inverted.
B The image is real and upright.
C The image is virtual and inverted.
D The image is virtual and upright.