While measuring the speed of sound by performing a resonance colu… - Vidyadip

MCQ

While measuring the speed of sound by performing a resonance column experiment, a student gets the first resonance condition at a column length of $18\,cm$ during winter. Repeating the same experiment during summer, she measures the column length to be $x\,cm$ for the second resonance. Then

✓
$x > 54$
B
$54 > x > 36$
C
$36 > x > 18$
D
$18 > x$

✓

Answer

Correct option: A.

$x > 54$

a
In second resonance $x = 3L_1 = 54$ but during summer temp. increases so velocity of sound increases.

$\therefore x > 3L_1$

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