Question

The ratio of mass of an electron to that of the mass of hydrogen atom is
(1) 1: 3871
(2) 1 : 1837
(3) 1: 1296
(4) 1 : 3781
(With explanation)

Answer 1

answer:1:1833

explain:

the mass of an electron is 9.11*10^-31kg

and mass of hydrogen is 1.67*10^-27kg so the ratio is 1:1833

but 1:1833 is not option

so you can write 1:1833 approximately equal to 1:1837

options no:(2)