(a)[2]
(b)[3]
Calculate the distance from the observatory to the reflector.
(c(i))[1]
State one application of ultraviolet rays.
(c(ii))[1]
State one adverse effect of ultraviolet rays.
Physics 0625 · IGCSE · Electromagnetic spectrum
Electromagnetic spectrum — practice question
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “sound waves are longitudinal rather than transverse, not electromagnetic, and cannot travel in a vacuum” …
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