Question

1.
[PHYS
Choose the correct answer :
A string is divided into three segments, so that the
segments have fundamental frequencies in the ratio
1: 2: 3. The length of three segments are in the
ratio
(1) 4:3:2
(2) 4:2:1
• (3) 3:2:1
(4) 6:3:2
2. An observer is moving away from a stationary​

Answer 1

answer : option (4) 6 : 3 : 2

A string is divided into three segments, so that the segments have fundamental frequencies in the ratio 1: 2: 3.

we know, frequency ∝ 1/ length of string.

so, ratio of length of each segment of string = 1/1 : 1/2 : 1/3

= 6/6 : 3/6 : 2/6

= 6 : 3 : 2

hence length of three segments are 6 : 3 : 2

Option (4) is correct choice.

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