Calculate the heat emitted by a bulb of 100 ~W in 1 ~min .

Correct answer: (D) 6000 ~J. Here, P=100 ~W, t=10 ~min=60 ~s Heat developed in time t H=P × t=(100 ~W)(60 ~s)=6000 ~J

Q114 / 180 · AIIMS 2012 · Physics

Calculate the heat emitted by a bulb of $100 \mathrm{~W}$ in $1 \mathrm{~min}$.

A
$100 \mathrm{~J}$
B
$1000 \mathrm{~J}$
C
$600 \mathrm{~J}$
Correct answer
D
$6000 \mathrm{~J}$

Solution

Here, $P=100 \mathrm{~W}, t=10 \mathrm{~min}=60 \mathrm{~s}$ Heat developed in time $t$ $H=P \times t=(100 \mathrm{~W})(60 \mathrm{~s})=6000 \mathrm{~J}$

Hence, the correct answer is option: 'D'.

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