Question

By dimensional analysis show that 1J-10'erg.
Expl
Q.7​

Answer 1

1 J= 1 kg m^2 s^-2

therefore 1J= [M L^2 T^-2]

erg in cgs

erg = g cm^2 s^-2

1J/ 1erg = kg m^2 s^-2 / g cm^2 s^-2

1J / 1erg = 10^7

therefore 1J = 10^7 erg