Physics questions with answers

2,629 multiple-choice questions. Open any question for its answer and explanation.

Questions asked in State PSC and UPSC prelims, by topic. Each topic also has notes to read.

Read the notes: Space →

1. Which of the following methods is used for measurement of distance between Earth and planets?Asked in MPSC CS Prelims 2022
2. In the universe, what are pulsars?Asked in BPSC Prelims Exam 69th
3. Which of the following statement(s) is/are correct about Black holes? 1. A black hole is a region of spacetime having so strong gravitation that no particles or electromagnetic radiation can escape from it. 2. The first image of black hole was captured by the Event Horizon Telescope. 3. The ideas of black hole was first given by Isaac Newton.Asked in GPSC Prelims CSP 2 2019
4. Isaac Newton (died 1727) predates these developments and did not conceive of black holes. 4. The terms "Event Horizon", "Singularity" "String Theory" and Standard Model" are seen in the news sometimes in the context of ______.Asked in GPSC Prelims CSP 2 2019 · UPSC IAS 2017
5. 'Black hole' is aAsked in UPSC NDA 1 2019
6. The 'Black Hole' was first made known byAsked in UPPCS Prelims 2015
7. A ‘black hole’ is a body in space which does not allow any radiation to come out. This property is due to itsAsked in UPPCS Prelims 2000
8. In which field of science will you learn about “white dwarf”Asked in RPSC RAS Prelims 2003
9. Black holes are celestial bodies governed by strongAsked in lower devision clerk 2025
10. According to the Big Bang theory of the origin of the Universe, the age of the Universe is estimated at about :Asked in UPSC CISF AC EXE 2023
11. ‘Big-Bang theory’ explains the origin ofAsked in UPPCS Prelims 2016
12. The concept of expanding universe is based onAsked in UPPSC Upper Mains 2010
13. The age of our universe is closest toAsked in WBCS Main Paper 4 2021
14. Which one of the following statements is not true about cosmic rays?Asked in UPPCS Prelims 2005
15. In the context of modern scientific research, consider the following statements about 'IceCube', a particle detector located at South Pole, which was recently in the news :Asked in UPSC IAS 2015
16. What would happen to earth if the sun suddenly disappears ? A. The earth immediately experiences the lack of sun light. B. The earth experiences the lack of sun light after about eight minutes. C. The earth immediately experiences the lack of gravitation. D. The earth experiences the lack of gravitation after about eight minutes. Choose the correct answer :Asked in TSPSC Group 1 Prelims 2022
17. The ratio of the diameters of moon and earth is nearlyAsked in WBPSC CS Prelims 2021
18. There is no atmosphere on the moon because:Asked in UPPSC Upper Mains 2012
19. According to Kepler's laws of planetary motion, the speed of satellite, when progressively brought nearer to earth _______ .Asked in GPSC Prelims CSP 2 2017
20. A laser light beamed at the Moon takes 2.56 s to return to earth after reflection at the Moon's surface. How much is the radius of the lunar orbit around the Earth ?Asked in MPSC CS Prelims 2021
21. Which of the following statement is correct ?Asked in MPSC CS Prelims 2023
22. Two planets orbit the Sun in circular orbits, with their radius of orbit as R₁ = R and R₂ = 4R. Ratio of their periods (T₁/T₂) around the Sun will beAsked in UPSC NDA 2 2020
23. If an apple is releasted from an orbiting spaceship, it willAsked in UPPCS Prelims 2010
24. A Ball thrown outside from an artificial satellite revolving round the Earth will:Asked in UPPCS Prelims 1995
25. Assertion (A): Artificial satellites are always launched from the earth in the eastward direction. Reason (R): The earth rotates from west to east and so the satellite attains the escape velocity.Asked in UPPCS Prelims 2002