tuning fork

JEE Main Sample Questions › Optics questions › tuning fork

if l1 n l2 are the length of the air columns for the first n second resonance when a tuning fork of frequency n is sounded on a resonance tube then the distance of displacemnt antinode frm the top end of resonance tube
(a)2(l2-l1)
(b)(2li-l2)/2
(c)(l2-3l1)/2
(d)(l2-l1)/2

#Physics #Optics

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2 Answers

62

Lokesh Verma ·2009-03-14 07:07:40

Note that

l₂=3l₁ = 3/4 Î»

Displacement of the displacement antinode is given by Î»/4

among the choices above, d is the correct choice...

I think this should be correct..

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vector ·2009-03-14 07:10:17

sry bhaiya ans is c

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