Question

40 Mev=
erg is a)3.6×10^6 b)3.6×10^-6 c)64×10^-13 d)64×10^-6​

Answer 1

$\large \underline \bold{Solution}$:-

$\qquad$$\sf 40 \: MeV$

=> $\sf 40\times 10^{6} \: eV$

=> $\sf 40\times 10^{6}\times (1.6\times 10^{-19})$

=> $\sf 40\times 1.6\times 10^{6-19}$

=> $\sf 4\cancel{0}\times \frac{16}{1\cancel{0}}\times 10^{-13}$

=> $\sf 4\times 16\times 10^{-13}$

=> $\small \bold{64\times 10^{-13} \: erg}$

Answer 2

Answer:

(D)

Explanation:

1Mev=1.6×10^-13J

40Mev=40×1.6×10^-13J

=64×10^-13J

1J=10^7erg

64×10^-13J=64×10^-13×10^7erg

=64×10^-6erg