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Q.

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

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a

18 > x

b

x > 54

c

54 > x > 36

d

36 > x > 18

answer is B.

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Detailed Solution

In the first experiment If the second experiment is performed in winter, length of column would be   = 54cm.In the summer season  In summer temperature increases, so x > 54 cm.
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