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General
Easy
Question
Two metallic strings A and B of different materials are connected in series forming a joint. The strings have similar cross-sectional area. The length of A is 
and that of B is 
. One end of the combined string is tied with a support rigidly and the other end is loaded with a block of mass m passing over a frictionless pulley. Transverse waves are setup in the combined string using an external source of variable frequency. The total number of antinodes at this frequency with joint as node is (the densities of A and B are 
respectively)
- 5
- 8
- 9
- 6
The correct answer is: 5
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