Mass of Proton :- 1.672X10-27kg

Mass of Neutron :- 1.675×10-27kg

Atom ka mass kisme show kia jata hai :- amu(atomic mass unit)

Photon ki energy kis formule par based hoti hai:- E=hv

P-type ke semi conductor ko bnane ke lie germanium ko kiske sath dope kia jata hai :- trivalent impurities

Suraj ki surface ka temperature kitna hota hai :- approx 5800 °C

Solar cell convert karti hai:- solar energy to electric energy

Electronic Circuit me diode mostly kis tarah istemal kiya jata hai:- rectifier

Suraj ki energy ka source kya hai:- Nuclear Fusion

Radioactivity ki discovery kisne ki thi:- Henry Becquerel

Einstein ko noble prize kis discovery ke liye mila tha:- Photo Electric Effect

RADAR me kis tarah ki waves ka istemal kiya jata hai:- Electro Magnetic Waves

Laser rays kis colour ki hoti hain:- sirf ek hi colour ki

Diode se current kitni direction me flow ho sakta hai:- sirf ek direction me

X-rays kon si rays hoti hain:- Electromagnetic Wave

Wo object jisme free electrons na ho:-  Resistor

Jab internal semiconductor me koi impurity aa jae to semiconductor ki conductivity badh jati hai.


Discovery                                              Discoverer

Proton                                                    Goldstein

Nucleus                                                  Rutherford

Heavy Water                                         Devi

Argon                                                     Ramsay & Rayleigh

Nitrogen                                                        Rutherford

PH Scale

Hydrogen                                              Cavendish

Calcium                                                  Devi

Magnesium                                           Devi

Radium                                                  Curie Couple

Sodium                                                  Devi

Potassium                                             Devi

Chlorine                                                 Carl Wilhelm Scheele

Uranium                                                Martin Heinrich Klaproth




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