ICSE Class 10 Answered
ans
Asked by | 02 Jan, 2013, 11:46: AM
Expert Answer
The thrid pin in a 3 pin plug longer than the other two pins.It is made longer so that it gets connected to the earth terminal earlier than the live and neutral pins. This ensures the safety of the user.
Factors that affect the rate of emission of elctrons in a photoelectic cell
1.Work function of the material that is used as cathode.
2.Intensity of light
3. area of cross-section
difference between a beta particle and an electron:
Beta particle are high-speed electron or positron, usually emitted by an atomic nucleus undergoing radioactive decay, where as eletrons are stationary
this is the only difference between electron and beta particle
Answered by | 02 Jan, 2013, 12:45: PM
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