Selected MCQ

Current Question
The Lagrangian of a system is defined as:
  • A. (T + V)
  • B. (T - V)
  • C. (V - T)
  • D. (TV)
Correct Answer: B
Explanation:
The Lagrangian equals kinetic energy minus potential energy.
Related Question 1
A system with negative heat capacity is characteristic of:
  • A. Ideal gas
  • B. Black holes and self-gravitating systems
  • C. Solids
  • D. Liquids
Correct Answer: B
Explanation:
Adding energy can decrease temperature in gravitational systems.
Related Question 2
Which system controls reflex?
  • A. Digestive
  • B. Nervous
  • C. Respiratory
  • D. Circulatory
Correct Answer: B
Explanation:
Nervous system handles reflexes.
Related Question 3
Which system removes waste?
  • A. Digestive
  • B. Excretory
  • C. Respiratory
  • D. Circulatory
Correct Answer: B
Explanation:
Kidneys filter waste.
Related Question 4
Which system exchanges gases?
  • A. Digestive
  • B. Respiratory
  • C. Circulatory
  • D. Nervous
Correct Answer: B
Explanation:
Lungs exchange gases.
Related Question 5
Which system transports nutrients?
  • A. Nervous
  • B. Circulatory
  • C. Respiratory
  • D. Digestive only
Correct Answer: B
Explanation:
Blood carries nutrients.