Light travels through air and enters a parallel-sided transparent plastic block at a non-zero angle of incidence.
Which statement is correct?
The frequency of the light decreases as it enters the block.
The wavelength of the light increases as it enters the block.
The angle of refraction inside the block is smaller than the angle of incidence in the air.
The light bends away from the normal as it enters the block.
216 exam-style questions on CIE IGCSE Physics 3.2 Light, covering 3.2.1a Reflection of light, 3.2.1b Images in a plane mirror, 3.2.2 Refraction of light, 3.2.2a Refraction of light, 3.2.2b Total internal reflection, 3.2.2c Refractive index and critical angle, 3.2.2d Optical fibres, 3.2.3a Converging and diverging lenses, 3.2.3b Ray diagrams and the nature of images, 3.2.3c Virtual images and the magnifying glass, 3.2.3d Correcting long-sightedness and short-sightedness, and 3.2.4 Dispersion of light. Each one has a worked solution and a mark scheme showing where the marks go.