wavelength problem . need a help guys . Watch

Alen.m
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Microwaves from a transmitter are reflected back to the transmitter using a flat metal plate. A detector is moved along the line between the transmitter and the metal plate. the detector signal is zero at positions 15mm apart.
A) calculate the wavelength of microwaves?
any idea what formula should i use to calculate the wavelength of microwaves in above question?
thanks guys .
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Phichi
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You have a standing wave, with nodes 15mm apart, and also anti-nodes 15mm apart.

When you receive no signal, the detector is sitting on a node. Can you generally relate the distance between nodes, to the wavelength of the standing wave?

This will be useful:



(Original post by Alen.m)
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