How many of the following statements are true about the cathode rays ?

(i) Path of travelling is straight from the cathode with a very high velocity as it produces shadow of an object placed in its path.

(ii) rays consist of material particle.

(iii) They deflect towards negative end of the electrode.

(iv) They produce yellow glow when the glass will beyond anode.

(v) Cathode rays penetrate through thin sheets of aluminium and metals.

(vi) They affect the photographic plates

(vii) The ratio of charge(e) to mass(m) i.e. charge/mass is same for all cathode rays irrespective of the gas used in the tube. e/m = 1.76 × 10 11 Ckg –1

(viii) cathode rays are visible at low voltage.