physics-xi

BASANT’S PHYSICSQUICK REVISION TEST [Q.R.T-2]UNIT MEASUREMENT & KINEMATICSF.M-13 CLASS-X I [PHY] TIME-15MINBASED ON ERRORS IN MEASUREMENTSIn an experiment performed tomeasure the refr4active index of glass , the successive measurements provided the following values of refractive index:(a) 1.54 (ii) 1.53 (iii) 1.44 (iv) 1.54 (v) 1.56 and (vi) 1.45 Calculate (i) mean value of refractive index of glass (ii) absolute error in every measurements (iii) mean absolute error (d) relative error and (e) percentage error. Also express the result in terms of absolute error and percentage error. [5 BASED ON CHECKING OF CORRECTNESS OF THE RELATIONUsing the theory of dimension, determine the dimension of constants ‘a” and ‘b” in vander wall equation.(P + ) (V-b) =RTWhat will be the units of these constants in S.I system? [2 BASED ON RELATIVE VELOCITYA jet air plane travelling at a speed of 500 km/h ejects its products of combustion at the speed of 1500 km/h relative to the jet plane. What is the speed of combustion products w.r.t. an observer on the ground? [3BASED ON ACCELERATIONIf the velocity of particle is given by v= m/s, what will be its acceleration? [2Displacement is given by x= 1+2t + 3t2 . Find the value of instantaneous acceleration. [1