A `100W` bulb and a 25W bulb are desigened for the same voltage. They have filaments of the same length and material. The ratio of the diameter of `100W` bulb to that of the `25W` bulb is

Two bulba A and B of 200 W and 25 W, respectively are designed for the same voltage wire used in both the cases are same. The ratio of radius of cross section of filament of bulb A to that of the bulb B is

A 60 W bulb glows better than a 25 W bulb.

The ration of the restistances of 100 W and 40 W bulbs of the same rated voltage is

Which has more resistance : 100 W bulb or 60 W bulb ?

Two electric bulbs have tungsten filament of same length. If one of them gives 60 W and the other 100 W , then

Two electric bulbs have tungsten filament of same length. If one of them gives 60 W and the other 100 W , then

An elecric bulb is marked 100w 250 Volt. Find the resistance of the filament inside the bulb