PMQ Two charged spherical conductors of radius R 1 and R 2 R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres ( σ 1 / σ 2 ) σ1/σ2 is: 1. √ ( R 1 R 2 ) R1R2 2. R 2 1 R 2 2 R12R22 3. R 1 R 2 R1R2 4. R 2 R 1 R2R1 Ruhul Amin Alig
PYQ In Young's double-slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes: 1. half 2. four times 3. one-fourth 4. double Ruhul Amin Alig
