MHT CET 2023 Physics question
The fundamental frequency of a sonometer wire carrying a block of mass 'M' and density '' is 'n' Hz. When the block is completely immersed in a liquid of density '' then the new frequency will be
Answer: (A)
Solution
The frequency of a stretched wire is , so . In air the tension equals the weight of the block, . When the block is completely immersed in a liquid of density the buoyant force acts upward, so \dfrac${Mσ
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