The change in the energy of system if \( 500 \mathrm{cal} \) of heat energy are added to a syste...

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The change in the energy of system if \( 500 \mathrm{cal} \) of heat energy are added to a system and system does \( 350 \mathrm{cal} \) of work on the surroundings will be
(a) \( -150 \mathrm{cal} \)
(b) \( +150 \mathrm{cal} \)
(c) \( +850 \mathrm{cal} \)
(d) \( -850 \mathrm{cal} \)
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