If $500\text{cal}$ of heat energy is added to a system and it does $350\text{cal}$ of work on the surrounding, the internal energy change of the system is:

Q. What is the change in the energy of the system if 500 cal of heat energy is added to a system and system does 350 cal of work on the surroundings?

Q. If 500 calorie of heat energy is added to the system and the system does 350 calorie of work on the surroundings, the internal energy change of the system is

Q. If 500 calorie of heat energy is added to a system and the system does 350 calorie of work on the surroundings, the energy change of the system is:

Q. A system is provided with $200\text{cal}$ of heat and the work done by the system on the surrounding is $40\text{J}$. Calculate the change in internal energy of the system?

Q. If $50$ calorie are added to a system and system does work of $30$ calorie on surroundings, the change in internal energy of system is ________________.