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A 100W bulb and a 25W bulb are desigened...

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

A

`4:1`

B

`2:1`

C

`sqrt(2):1`

D

`1:2`

Text Solution

Verified by Experts

The correct Answer is:
B
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