Two bulbs of 500W and 300W are manufactured to operate on a 220V line.If their resis tance are `R_(1)` and `R_(2)` respectively then value of `R_(1)/R_(2)` is

Options

A. `5//3`
B. `3//5`
C. `25//9`
D. `9//25`

Answer

B

Explanation

`R=(V^(2))/(P)or(R_(1))/(R_(2))=(P_(2))/(P_(1))=(300)/(500)=(3)/(5)`