Physical World MCQ Multiple Choice Questions Answers - Page 2 for Practice
31. The scientist who discovered the “Theory of Relativity†belonged to
Correct Answer is: Germany
32. Which of the following technology uses Newton's second and third laws of motion
Correct Answer is: Rocket Propulsion
33. Laws of electromagnetic induction were discovered by:
Correct Answer is: Faraday
34. Heat engine and refrigerator work on scientific principle:
Correct Answer is: Laws of thermodynamics
35. Who discovered cosmic rays
Correct Answer is: Hess
36. The scientist who discovered cosmic rays belonged to
Correct Answer is: Austria
37. The physical sciences deal with the study of:
Correct Answer is: Non-living things
38. The branch of science which deals with the study of stars is called
Correct Answer is: Astronomy
39. The idea of calculus was given by
Correct Answer is: Newton
40. Which of the following principles is being used in Sonar Technology?
Correct Answer is: Reflection of ultrasonic waves
41. Which of the following is wrongly matched?
Correct Answer is: Humidity-Calorimeter
42. C.V.Raman got Nobel Prize for his experiment
Correct Answer is: Scattering of light
43. The discoverer of loudness and intensity of sound is
Correct Answer is: Bell
44. It has been postulated that there may be some particles moving with speed greater than the speed of light. Such particles are known as
Correct Answer is: Tachyons
45. A superposition that is put forward as a probable solution to a natural phenomenon is called a
Correct Answer is: Hypothesis
46. The book “Pisces of physics'' has been written by
Correct Answer is: Einstein
47. It is more important to have beauty in the equations of physics than to have them agree with experiments'' The scientist who made this statement is
Correct Answer is: Dirac
48. Chandershekher, Indian scientist was awarded Nobel Prize in Physics on subject concerning
Correct Answer is: Astronomy
49. Law of conservation of angular momentum follows which symmetry?
Correct Answer is: Isotropy of time
50. Rank the four fundamental forces of nature in order from weakest to strongest
Correct Answer is: Gravity, Weak Nuclear, Electromagnetism, Strong Nuclear
51. Gravity has a range that is
Correct Answer is: Infinite
52. ...............can be either a force of attraction or repulsion while...............is only a force of attraction.
Correct Answer is: Electromagnetism; Gravity
53. When an atom undergoes radioactive decay, the energy that is released is due to
Correct Answer is: Strong Nuclear
54. Range of Nuclear forces is
Correct Answer is: < 10-14m
55. The word Science originates from the Latin verb Scientia meaning
Correct Answer is: to know
56. The scientific method is
Correct Answer is: a body of techniques for investigating phenomena, acquiring new knowledge
57. Which of the following is a possible first step in applying the scientific method
Correct Answer is: Formulating of a question
58. Which of the following is a possible final step in applying the scientific method
Correct Answer is: Analysis of test results
59. A scientific theory
Correct Answer is: can be revised if required to fit new phenomenon or data
60. The branch of science which deals with the study of stars is called
