An iron load of 2 kg is suspended in the air from the free end of a sonometer wire of length 1 m . A tuning fork of frequency 256 Hz is in resonance with time the length of the sonometer wire. If the load is immersed in water that will be in resonance with the same tuning fork is (specified gravity of iron=8)

Question

An iron load of 2 kg is suspended in the air from the free end of a sonometer wire of length 1 m . A tuning fork of frequency 256 Hz is in resonance with time the length of the sonometer wire. If the load is immersed in water that will be in resonance with the same tuning fork is (specified gravity of iron=8), 8, 6, 1 6, 1 8

MARKS App · Accepted Answer

We know l ∝ T ∴ l a i r ι w a t e r = T a i r T w a t e r But specific gravity 8= T a i r T a i r - T w a t e r ⟹ T w a t e r = 7 8 T a i r ∴ l a i r l w a t e r = 8 7 But l a i r = 1 7 l G i v e n ∴ l w a t e r = 1 8 l

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