Practise Edexcel A-Level Physics wave equation questions through v=fλ, λ/T speed calculations, microwave frequency, sound waves and changing wavelength contexts.
A student investigated the reflection of microwaves from a metal plate and a glass plate. The metal plate reflects microwaves and the glass plate partially reflects microwaves.
A plan view of the apparatus is shown.
The metal plate, the transmitter and the receiver were kept in fixed positions. The value of d was varied by moving the glass plate.
The student recorded values of d when the receiver showed a maximum value of intensity.
He recorded d for a sequence of five maxima.
Maxima | 1 | 2 | 3 | 4 | 5
d / cm | 9.9 | 11.1 | 12.7 | 13.9 | 15.4
Calculate the frequency of the microwaves being transmitted.
Frequency =
