Q138. Two light bulbs, rated 500 W and 300 W, are designed to operate on a 220 V line. If their respective resistances are R1 and R2, what is the value of the ratio R1/R2?Physics — NUST Mock By Dogers 2 — Question 138 of 200A. 5/3B. 9/25C. 3/5D. 25/9Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →