In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures, t_(1) and t_(2). The liquid columns in two arms have heights I_(1) and I_(2) respectively. The coefficient of volume expansion of the liquid is equal to

In a vertical U-tube containing a liquid, the two arms are maintained

1.	In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures, t_(1) and t_(2). The liquid columns in two arms have heights I_(1) and I_(2) respectively. The coefficient of volume expansion of the liquid is equal to
Answer» `(I_1+I_2)/( (I_2 t_(1) - t_(1) I_(2) )` `(I_(1) - I_(2) )/( I_(1) (t_(1) - I_(1) t_(2) )` `(I_(1)+ I_(2) )/( I_(2) t_(1) + I_(1) t_(2) ) ` `(I_(1) + I_(2) )/( I_(1) t_(1) + I_(2) t_(2) )` ANSWER :A