T
Q) Which element is used as fuel in breeder reactors?
Correct Answer - Option
(A)
Explanation:
Breeder reactors use plutonium-239 or uranium-238 to generate more fissile material.
Physics MCQ Questions with answers
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 or on option itself. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping whatsapp button.
Learn Physics mcqs in hindi here.
Learn Physics MCQs [Page 368 ]
T
Q) What is the main by-product of uranium fission?
Correct Answer - Option
(B)
Explanation:
When uranium-235 undergoes fission, it splits into smaller nuclei like barium and krypton.
T
Q) Which law governs the rate of radioactive decay?
Correct Answer - Option
(B)
Explanation:
Radioactive decay follows an exponential law: N = N₀e⁻λt, where λ is the decay constant.
T
Q) What is the SI unit of radioactive activity?
Correct Answer - Option
(B)
Explanation:
The becquerel (Bq) is the SI unit of activity, equal to one disintegration per second.
T
Q) Which unit measures the biological effect of radiation?
Correct Answer - Option
(B)
Explanation:
Sievert measures the biological effect of radiation on human tissue.
T
Q) Which of the following protects the reactor from radiation leakage?
Correct Answer - Option
(C)
Explanation:
Thick concrete walls absorb harmful radiation to prevent environmental exposure.
T
Q) What happens in a chain reaction?
Correct Answer - Option
(B)
Explanation:
A chain reaction occurs when neutrons from one fission trigger additional fissions.
T
Q) Which nuclear disaster occurred in 1986?
Correct Answer - Option
(B)
Explanation:
The Chernobyl disaster occurred in Ukraine in 1986, releasing large amounts of radioactive material.
T
Q) What type of decay converts a proton into a neutron?
Correct Answer - Option
(A)
Explanation:
In beta-plus decay, a proton changes into a neutron while emitting a positron.
T
Q) Which isotope is used in medical imaging and cancer treatment?
Correct Answer - Option
(A)
Explanation:
Iodine-131 is used to diagnose and treat thyroid disorders and some cancers.
Jump to
Tags: Physics mcqs, important mcqs of Physics, Physics important Physics mcqs, mcqs on Physics, important mcqs on Physics, mcqs of Physics
Attempt 200+ Quizzes on Physics
Download our easy to use, user friendly Android App from Play Store. And learn MCQs with one click.
