[" 12.If "v2=1.41" ,then "1/v2=?],[[" a."0.075," b."0.75," c."0.705],[" d."7.05]]

A is a square matrix of order 3 and v_1, v_2, v_3 are 3 column matrices such that Av_1=[[1],[2],[3]] , Av_2=[[-1],[0],[2]] , Av_3=[[0],[-1],[2]] where v_1=[[1], [1], [1] , v_2=[[2], [0], [3] , v_3=[[1], [1], [-1] then the value of |A| is

When a body moves with velocity V_1 for first half of the journey and V_2 for remaining half of the journey, its average velocity is given by 2/V_"av"=1/V_1+1/V_2 . If V_1 and V_2 are (15pm0.5) m/s and (30pm0.1) m/s, find the average velocity within error limits.

When a body moves with velocity V_1 for first half of the journey and V_2 for remaining half of the journey, its average velocity is given by 2/V_"av"=1/V_1+1/V_2 . If V_1 and V_2 are (15pm0.5) m/s and (30pm0.1) m/s, find the average velocity within error limits.

v_1 and v_2 are the velocities of sound at the same temperature in two monoatomic gases of densities rho_1 and rho_2 respectively. If p_1//p_2=frac(1)(4) then the ratio of velocities v_1 and v_2 will be

Two solid spheres S_1 and S_2 of same uniform density fall from rest under gravity in a viscous medium and after some time, reach terminal velocities v_1 and v_2 respectively. If ratio of masses (m_1)/(m_2)=8 , then (v_1)/(v_2) will be equal to

" "_(2)n_(1)=(v_(1))/(v_(2)): :""_(1)n_(2): ………………..

The speed of a projectile at its highest point is v_1 and at the point half the maximum height is v_2 . If v_1/v_2 = sqrt(2/5) , then find the angle of projection.