Incandescent bulbs are designed by keeping in mind that the resistance of their filament increases with the increase in temperature. If at room temperature, 100, 60 and 40 W bulbs have filament resistances R_{100},R_{60} and R_{40} respectively, the relation between these resistances is

Question

Incandescent bulbs are designed by keeping in mind that the resistance of their filament increases with the increase in temperature.  If at room temperature, 100, 60 and 40 W bulbs have filament resistances R_{100},R_{60}  and R_{40} respectively, the  relation  between these resistances is

Examsnet · Accepted Answer

Correct Answer is : 1R100 > 1R40 > 1R60

IIT JEE Advanced 2010 Question Paper 1