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A sphere of small size is at the bottom of a lake of depth 20 ЁЭСЪ. Due to pressure, its fractional change in volume is ЁЭЫ╝├Ч10^тИТ7. What is the value of ЁЭЫ╝, the bulk modulus of the sphere is 5├Ч10^12 ЁЭСГЁЭСО (use ЁЭСФ=10 ЁЭСЪ/ЁЭСа^2)? JEE 2024