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JEE Main 202116 MarchMorning Shift

Exam: JEE Main
Year: 2021
Date: 16 March
Shift: Morning Shift
Subject: Physics
Chapter: Waves and Sound

JEE Main 2021 · 16 March · Morning Shift · Physics · Waves and Sound

A 25m long antenna is mounted on an antenna tower. The height of...

A

25m

long antenna is mounted on an antenna tower. The height of the antenna tower is

75m

. The wavelength (in meter) of the signal transmitted by this antenna would be :

Options

A $300$
B $400$
C $200$
D $100$

Correct answer

D. $100$

Step-by-step solution

Length of Antena $= 25m = \dfrac{\lambda}{4}$

$⇒ \lambda = 100m$

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