174. Choose the correct statements
i) The nature of cathode rays does not depend on the nature of gas taken in discharge tube.
ii) Anode rays cause sputtering when incident on metal.
iii) Cathode rays produce X rays when they are abruptly stopped by metallic obstacle and nature of X rays produced depends only on metal and not on cathode rays
iv) The degree of deflection in same magnetic field vary in case of anode rays produced from different gases taken in discharge tube.