Question

filaments of two bulb of 25w and 100w , having same Volta rating,area of same material and length.what is ratio of their diameter​

Answer 1

A 100-W bulb and a 25-W bulb are designed for the same voltage. They have filaments of the same length and material. The ratio of the diameter of the 100-W bulb to that of the 25-W bulb is(a) 4 : 1is ur answer