Under isothermal condition, the pressure of a gas is given by P= aV^-3 , where a is a constant and V is the volume of the gas. The bulk modulus at constant temperature is equal to:
(1)P/2 
(2) 3 P 
(3) 2 P 
(4) P
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Solution:                
Under isothermal condition, the pressure of a gas is given by P= aV^-3 , where a is a constant and V is the volume of the gas. The bulk modulus at constant temperature is equal to: (1)P/2 (2) 3 P (3) 2 P (4) P JEE-2024

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The magnetic field at the centre of a wire loop formed by two semi circular wires of radii R1 = 2 πm and R2 = 4π m carrying current I = 4A as per figure  given below is  a × 10^–7 T. The value of a is  ______. (Centre O is common for all segments)           

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