The prelims of the Physics Quiz, Air Force Bal Bharati School Physics Fest 2013. QM - Ashhad Qasmi, Ashish Kumar

1. The Physics Quiz
Preliminary Round
AFBBS Physics Fest 2013

2. Rules
• Each question is worth a single point, unless
stated otherwise
• Asterisk (*) marked questions will be used to
resolve any ties
• Maximum points = 25

3. 1
• "Rotation of the earth supports the formation
of tides in the ocean"
• Fact or fiction?

4. *2
*The ISRO spacecraft Aditya-1 will study ______

5. 3
• If a stone and a feather are dropped from a
small height on the moon, what will hit the
surface first?

6. 4
• Name the two fundamental forces that have
been unified.

7. 5
• Name any one of the forces in action during
churning of milk.

8. 6
• Lorenzo Romano **ed** Carlo __________ di
Quareqa edi Carreto (1776-1856) advanced
the study of thermodynamics by suggesting
that equal volumes of gases have equal
number of molecules at the same
temperature and pressure. He also suggested
that oxygen and hydrogen existed in the
diatomic state, a view which was rejected by
Dalton. Fill in the blank.

9. *7 *Who is proving what?

10. 8
• If time period of oscillation of a wooden bob
of 3.14 kg attached to a massless string is 5
seconds then what is the time period of
oscillation after adding an iron bob weighing
2π kg to the same string?

11. 9
• The element that is used in catalytic
convertors, storage and production of pure
hydrogen and manufacturing of capacitors
also powers a fictional reactor(shown in the
picture). Which element?

12. 10
• A boy is sitting in a car with a helium balloon
with him. Suddenly a car accelerates in the
forward direction. In which direction will the
balloon move?

13. 11
• For escaping heat from sunshine, what colour
of the umbrella is the best? Tell colours for
both inside and outside.
(2 points)

14. 12
• Is the speed of sound maximum in helium
gas, liquid mercury, or solid carbon?

15. *13
• *What are the units of measurement of
vacuum?

16. 14
• The design of this government engineering college
in Kerala has made it famous as its front resembles
a famous celestial object. What object?

17. 15
• Antiparticle of electron is _____________.

18. 16
• Identify:

19. 17
• Who was the first person to measure the
gravitational constant (G)?

20. *18
• *Write down your exact weight in 3 significant
figures.

21. 19
• Is dp/dt = ma universally true? If not, write for
what or when it is false?
(2 points)

22. 20
• Identify the very popular scientist

23. 21
• *If the motion of constituents of the outer
core of earth- iron, nickel were to stop, what
would be the effect on the earth's magnetic
field?

24. *22
*Neutron stars result from massive stars of mass
greater than 4 to 8 times that of our Sun. After
these stars have finished burning their nuclear fuel,
they undergo an explosion which blows off their
outer layers and the central region of the star
collapses under gravity so much that protons and
electrons combine to form neutrons. They emit
radiation from only some circular regions around
their poles and hence on rotation they seem like
sending pulses of light. What are rotating neutron
stars known as?

25. 23
• Gadolinium Einsteinium Fermium
Mendelevium Nobelium Lawrencium
Rutherfordium Seaborgium Bohrium
Meitnerium Roentgenium Copernicum
Flerovium What is missing?

26. Answers

28. 1
• "Rotation of the earth supports the formation
of tides in the ocean"
• Fact or fiction?

29. 1
• Fact

30. *2
*The ISRO spacecraft Aditya-1 will study ______

31. 2
• Sun

32. 3
• If a stone and a feather are dropped from a
small height on the moon, what will hit the
surface first?

33. 3
• Both stone and feather will hit the surface at
the same time

34. 4
• Name the two fundamental forces that have
been unified.

35. 4
• Electromagnetic force and weak nuclear force

36. 5
• Name any one of the forces in action during
churning of milk.

37. 5
• Viscous force, centrifugal force

38. 6
• Lorenzo Romano **ed** Carlo __________ di
Quareqa edi Carreto (1776-1856) advanced
the study of thermodynamics by suggesting
that equal volumes of gases have equal
number of molecules at the same
temperature and pressure. He also suggested
that oxygen and hydrogen existed in the
diatomic state, a view which was rejected by
Dalton. Fill in the blank.

39. 6
• Lorenzo Romano Amedeo Carlo Avogadro di
Quareqa edi Carreto

40. *7 *Who is proving what?

41. 7
• Benjamin Franklin proving lightning is flow of
electric charge

42. 8
• If time period of oscillation of a wooden bob
of 3.14 kg attached to a massless string is 5
seconds then what is the time period of
oscillation after adding an iron bob weighing
2π kg to the same string?

43. 8
• 5 seconds, T remains same

44. 9
• The element that is used in catalytic
convertors, storage and production of pure
hydrogen and manufacturing of capacitors
also powers a fictional reactor(shown in the
picture). Which element?

45. 9
• Palladium

46. 10
• A boy is sitting in a car with a helium balloon
with him. Suddenly a car accelerates in the
forward direction. In which direction will the
balloon move?

47. 10
• Forward

48. 11
• For escaping heat from sunshine, what colour
of the umbrella is the best? Tell colours for
both inside and outside.
(2 points)

49. 11
• Inside: Black
• Outside: White

50. 12
• Is the speed of sound maximum in helium
gas, liquid mercury, or solid carbon?

51. 12
• Solid carbon

52. *13
• *What are the units of measurement of
vacuum?

53. 13
• Pascal, N/m2 or any other unit of pressure

54. 14
• The design of this government engineering college
in Kerala has made it famous as its front resembles
a famous celestial object. What object?

55. 14
• Aryabhatta (satellite)

56. 15
• Antiparticle of electron is _____________.

57. 15
• Positron

58. 16
• Identify:

59. 16
• Sputnik

60. 17
• Who was the first person to measure the
gravitational constant (G)?

61. 17
• Henry Cavendish

62. *18
• *Write down your exact weight in 3 significant
figures.

63. 18
• Weight ϵ [300 N, 120 X 101 N]
OR
[300 X 105 dyn, 120 X 106 dyn]
OR
in any other unit of measurement of force,
with accepted masses in the range 30kg to
120kg (assuming all participants satisfy this
range)

64. 19
• Is dp/dt = ma universally true? If not, write for
what or when it is false?
(2 points)

65. 19
• False. Particles moving close to speed of light
do not have a constant mass

66. 20
• Identify the very popular scientist

67. 20
Richard Feynman

68. 21
• *If the motion of constituents of the outer
core of earth- iron, nickel were to stop, what
would be the effect on the earth's magnetic
field?

69. 21
• Magnetic field would diminish

70. *22
*Neutron stars result from massive stars of mass
greater than 4 to 8 times that of our Sun. After
these stars have finished burning their nuclear fuel,
they undergo an explosion which blows off their
outer layers and the central region of the star
collapses under gravity so much that protons and
electrons combine to form neutrons. They emit
radiation from only some circular regions around
their poles and hence on rotation they seem like
sending pulses of light. What are rotating neutron
stars known as?

71. 22
• Pulsar

72. 23
• Gadolinium Einsteinium Fermium
Mendelevium Nobelium Lawrencium
Rutherfordium Seaborgium Bohrium
Meitnerium Roentgenium Copernicum
Flerovium What is missing?

73. 24
• Curium
• <Exhaustive list of elements named after
people>