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Question
10 MeV গতি শক্তি নিয়ে চলমান ইলেকট্রনের ভর কত?
m
0
10
m
0
0
.
2051
m
0
2
.
051
m
0
20
.
51
m
0
ANSWER : 5
Descrption
<p>10 MeV কে J এ রুপান্তর করতে হবে।</p><p>E= 10×10<sup>6</sup>×1.6×10<sup>-19</sup>=1.6×10<sup>-12</sup></p><p>E =(m-m<sub>0</sub>)c<sup>2</sup></p><p><sup>or, </sup>1.6×10<sup>-12</sup>= (m-m<sub>0</sub>)c<sup>2</sup></p><p><sup>or, </sup>(m-m<sub>0</sub>)= 1.6×10<sup>-12</sup>/ c<sup>2</sup></p><p><sup>or, </sup>(m-m<sub>0</sub>)= 1.77×10<sup>-19</sup></p><p>or, m/m<sub>0</sub> -1= (1.77×10-19)/m<sub>0</sub></p><p><sub>or, </sub>m/m<sub>0</sub> = 19.51+1</p><p>or, m= 20.51m<sub>0</sub></p>
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