Physics MCQ Questions with answers

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Here Important Physics MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping Share button.

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📊 Physics
Q. What is the typical temperature required for nuclear fusion to occur?
  • (A) 1,000°C
  • (B) 10,000°C
  • (C) 10 million°C
  • (D) 100°C
💬 Discuss
✅ Correct Answer: (C) 10 million°C

Explanation: Nuclear fusion requires extremely high temperatures (around 10 million°C) to overcome electrostatic repulsion.

📊 Physics
Q. Which of the following isotopes is not radioactive?
  • (A) Uranium-235
  • (B) Carbon-12
  • (C) Radium-226
  • (D) Plutonium-239
💬 Discuss
✅ Correct Answer: (B) Carbon-12

Explanation: Carbon-12 is stable and non-radioactive, while the others are radioactive isotopes.

📊 Physics
Q. What is the major challenge in controlling nuclear fusion reactions?
  • (A) Lack of uranium fuel
  • (B) Containment of high temperature plasma
  • (C) Excessive radiation leakage
  • (D) Low energy output
💬 Discuss
✅ Correct Answer: (B) Containment of high temperature plasma

Explanation: Fusion reactions require extremely hot plasma, which is difficult to contain safely and efficiently.

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