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Modern Physics and Everyday Devices – GK Quiz with Answers – Level 2

Modern physics GK practice on atomic discoveries, Rutherford's experiment, radioactivity, half-life, nuclear fission, the photoelectric effect and semiconductor devices such as diodes and solar cells, fully explained.

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Choose Normal practice or a Simulated test.

Questions, answer key and solutions.

Questions
50
Duration
30 min
Marks
50

Negative marking

Attempts
100
Access
Free
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Normal practice, or a Simulated test

Both use the same questions. Normal practice is untimed and needs no account: choose an option and the answer and solution appear at once. The Simulated test is the real computer-based format, with one 30-minute clock, a question palette and full screen, and your score, the key and the solutions arrive when you submit.

Open Normal practiceTake the Simulated test
How the two modes differ
No account needed

Normal

Untimed

Every question on one page, loading as you scroll. Choose an option and see straight away whether it was right.

  • No timer. Nothing to start and nothing to submit. Stop whenever you like.
  • Answered as you choose. Tap an option and it is marked at once, with the correct answer shown.
  • Solutions in place. The explanation, and the video where one has been added, sit under the question.
  • Open to guests. Normal practice needs no sign-in.
Real exam conditions

Simulated

Timed CBT

The computer-based test format: one clock, a question palette, and a score the moment you submit.

  • A clock that does not pause. 30 minutes from the moment you begin, and the paper is submitted for you when it reaches zero.
  • Question palette. Answered, not answered and marked for review, section by section, as the real interface has it.
  • Full screen, proctored. The test takes over the screen; leaving it three times submits the paper.
  • Answers hidden until you submit. The key, the explanations and your score all arrive together at the end.

About this test

Modern Physics GK Quiz Level 2: Atoms, Nuclei and Semiconductor Devices

Atomic structure, radioactivity and semiconductor devices form the core of this Modern Physics and Everyday Devices GK Quiz, Level 2. The set links discoveries by Thomson, Rutherford, Becquerel, Einstein and Chadwick to devices such as photocells, solar cells and diodes. Aptitude360 frames the questions as chronology, matching, odd-one-out and statement checks.

What this modern physics GK quiz covers

  • Discovery of the electron, nucleus and neutron, and the scientists behind each
  • Rutherford's alpha-particle scattering experiment and the nature of the nucleus
  • Radioactivity: its discovery, alpha, beta and gamma emissions, and half-life
  • Nuclear fission, chain reactions, reactors and Einstein's mass-energy relation
  • Photoelectric effect, photocells as the electric eye, and solar cells
  • Semiconductors: n-type and p-type doping, elemental semiconductors, p-n junction diodes and rectifiers

Key concepts in atomic physics and devices

  • Correct chronological order of major atomic discoveries
  • Which particle or radiation each type of radioactive decay releases
  • Why a diode conducts in one direction and can convert alternating current to direct current
  • Energy conversion in generators, motors and photocells
  • How the conductivity of a semiconductor compares with conductors and insulators

How to revise modern physics for GK papers

  • Build a timeline of discoveries with the scientist's name beside each event
  • Pair every device with the energy conversion it performs
  • Remember that each half-life halves the remaining undecayed nuclei

Who this set suits

General science learners preparing for competitive exams who want structured practice on modern physics and the devices built on it.

FAQs about Modern Physics and Everyday Devices – GK Quiz with Answers – Level 2

Who discovered radioactivity?
Henri Becquerel discovered radioactivity accidentally in 1896 while working with uranium compounds.
What did Rutherford's gold foil experiment prove?
It showed that an atom has a tiny, dense, positively charged nucleus at its centre and that most of the atom is empty space.
What is nuclear fission?
Nuclear fission is the splitting of a heavy nucleus into lighter nuclei with the release of a large amount of energy. The neutrons released can split more nuclei, which makes a chain reaction possible, as used in nuclear reactors.
What is the difference between n-type and p-type semiconductors?
An n-type semiconductor is made by adding a pentavalent impurity, so electrons are the majority carriers. A p-type semiconductor uses a trivalent impurity, so holes are the majority carriers.

Test structure

How the paper is split, and how long each part runs. A section you have finished cannot be returned to.

SectionQuestionsTime
Modern Physics and Everyday Devices GK Level 25030 min

Marking & rules

Total marks
50 across 50 questions.
Negative marking
A wrong answer costs marks. Leaving a question unanswered costs nothing.
Attempts
100 in total. An attempt is spent the moment you begin one.

What you get when you submit

The analysis is ready the moment you submit the paper.

Score and accuracy

Marks, percentage, right, wrong and skipped, and the time you took.

Section by section

The same figures for each section, so a weak one cannot hide in an average.

The full answer key

Every question with your answer, the right one, the working, and the video where there is one.

Where you stand

Your score against the spread of everyone else who has sat this test.

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