Goiit - JEE Main & Advanced, BITSAT, MTCET, KCET, SCRA, Entrance Exam Notifications Study Tips, Sample Papers, Experts Advice, IIT JEE forums

Physics
The force with which the plates of a parallel plate capacitor , having charge Q and area of each plate A, attract each other is (a)Zero (b) Q²/ _oA (c)Q²/ _oA (d)Q²/ 2 _oA
Chemistry
For the reaction CO(g) + 2H₂(g) CH₃ OH(g),hydrogen gas is introducedinto a five- litre flask at 327^oC containing 0.2 mol of CO(g) and a catalyst until the pressure is 4.92atm. At this point, 0.1 mol of CH3 OH(g), is formed. Calculate the eqilibrium constants K_pand K _c
Mathematics
if the function f:[ 2 , ) [ 2 ,) is defined by f(x) = 3 ^{x(x -2)} , then f^-1(x)is (a)(1/3)^{x(x -1)} (b) ( 1 + ) (c) ( 1 - ) (d) not defined