Shown below are some parts of the electromagnetic spectrum, arranged from the longest wavelength to the shortest: radio waves, microwaves, visible light, ultraviolet radiation, gamma rays.
(a(i))[1]
State the speed at which every electromagnetic wave travels in a vacuum.
(a(ii))[1]
State which component of the electromagnetic spectrum shown has the smallest frequency.
(a(iii))[2]
Two parts of the electromagnetic spectrum are missing from the list above. State the names of these parts.
(b(i))[1]
Suggest one reason why it is sensible to stop microwaves from escaping.
(b(ii))[1]
State one more application of microwaves, apart from microwave ovens.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “3.0×10⁸ m s^{-1}” …