Question

.13
In the above question, if the temperature of the filament
falls to 2000k due to a drop of mains voltage, then what will
be the wattage of the bulb?
(A) 15W
(B)16W
(C) 17W
(D) 18W
0.15 kg of water is filled in caloriemeter of copper with
water equivalent.01kg. It's rate of cooling is 88 107 kcal
is filled in place of water at the same
.14​

Answer 1

Answer:

Option a is the answer. ....