8. A mono-atomic gas of mass 4.0u is kept in an insulated container. Container is moving with velocity 30 m/s. If container is suddenly stopped then change in temperature of the gas (R = X gas constant) is. Value of x is.................. 3R 9. A small bob tied at one end of a thin string of length 1m is describing a vertical circle so that the maximum and minimum tension in the string are in the ratio 5: 1. The velocity of the bob at the highest position is ................... m/s. (Take g = 10 m/s) 3 10. The electric field in a region is given by E = E+E} 5 5 4 N C The ratio of flux of reported field through the rectangular surface of are 0.2m (parallel to y-z plane) to the of the surface of are 0.3m (parallel to x - z plane) is a b, where a = . [Here i, and K are the unit vectors along x, y and z-axes respectively]