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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityMicroscopicHard2 minPYQ_2008

PhysicsHardsingle choice

A radio station has two channels. One is AM at $1020 kHz$ and the other FM at $89.5 MHz$ . For good results you will use

Options:

Answer:

Solution:

Antenna length $= \frac{λ}{4} \propto λ$ $∵ λ \propto \frac{1}{v}$ for cosntant velocity, $∴$ Antenna length $\propto \frac{1}{v}$ Here, $v_{AM} < v_{FM}$ $∴$ Antenna length for AM should be longer than that of FM.

Stream:VITEEESubject:PhysicsTopic:Current ElectricitySubtopic:Microscopic

⏱ 2mℹ️ Source: PYQ_2008

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