9th Class Physics Second half Book Paper

Q1. Multiple choice questions (Attempt all · 56 × 0.5 = 28)

1. When studying how air conditioners cool your house, then it is.
   1. Thermodynamic
   2. Electromagnetism
   3. Nuclear Physics
   4. Optics
2. When a gas is heated, it may change:
   1. Volume
   2. Pressure
   3. Both a & b
   4. Color
3. Central part of atom is called:
   1. proton
   2. electron
   3. nucleus
   4. neutron
4. What is the primary component of natural gas?
   1. Carbon Dioxide
   2. Methane
   3. Ethanol
   4. Nitrogen
5. Computational physics combine are:
   1. physics
   2. computer science
   3. mathematics
   4. all of these
6. Molecules in motion. When temperature is:
   1. Low
   2. High
   3. Constant
   4. None of these
7. Earth magnetic field resemble with the field of:
   1. magnet
   2. bar magnet
   3. moon
   4. sun
8. Which fossil fuel is the most abundant globally?
   1. Oil
   2. Natural Gas
   3. Coal
   4. Nuclear
9. The branch of Physics that deals with the particles such as neutrons and protons.
   1. Solid State Physics
   2. Plasma Physics
   3. Electricity
   4. Nuclear Physics
10. Ionic state of matter is called:
    1. Gas
    2. Plasma
    3. Liquid
    4. None of these
11. The direction of magnetic field can be found:
    1. left hand rule
    2. right hand rule
    3. complete hand
    4. none of these
12. What will be magnitude of work if a force of 25N pulse a stone through a distance of 5m in its direction:
    1. 25 J
    2. 50 J
    3. 75 J
    4. 125 J
13. The knowledge gain through observation and experimentation is called:
    1. physics
    2. science
    3. technology
    4. all of these
14. Which material is used in thermometer?
    1. Mercury
    2. Water
    3. Milk
    4. All of these
15. Proton consist of charge:
    1. positive
    2. negative
    3. zero
    4. all of these
16. A force is acting on body but causes no displacement. The work down on the body is.
    1. Positive
    2. Negative
    3. Zero
    4. Infinite
17. Which branch of science plays an important role in engineering?
    1. Biology
    2. Chemistry
    3. Physics
    4. Life science
18. Weakest attractive forces are in:
    1. Solid
    2. Liquid
    3. Gases
    4. Plasma
19. Iron crystals are found in the beaks of:
    1. pigeons
    2. tiger
    3. lion
    4. all of these
20. 1 hp = __________ W.
    1. 756 W
    2. 716 W
    3. 736 W
    4. 746 W
21. Which of the following is specific condition of theory?
    1. kinetic molecular theory
    2. theory of general relativity
    3. theory of Newton
    4. Both a & b
22. In internal energy, potential energy of the particle of the substance is:
    1. Attractive force
    2. Repulsive force
    3. Constant force
    4. Net force
23. Permanent magnetic are used:
    1. MRI
    2. electric motor
    3. electric fan
    4. None of these
24. The energy possessed by a body due to its position is called:
    1. kinetic energy
    2. potential energy
    3. chemical energy
    4. muscular energy
25. A tentative and testable statement is called:
    1. theory
    2. law
    3. hypothesis
    4. computational of physics
26. The degree of hotness are coldness:
    1. Heat
    2. Temperature
    3. Internal energy
    4. Kinetic energy
27. Graphically the magnetic field is representative by:
    1. lines
    2. field lines
    3. normal lines
    4. imaginary line
28. 1120 W are equal to:
    1. 1 hp
    2. 2.5 hp
    3. 1.5 hp
    4. 2.7 hp
29. Which of the following law is the discussion of heat?
    1. Boyle's law
    2. Newton's law
    3. Law of thermodynamics
    4. all of these
30. Plasma is:
    1. Good conductor
    2. Bad conductor
    3. semi-conductor
    4. Non conductor
31. In paramagnetic material:
    1. zero
    2. maximum
    3. non zero
    4. all of these
32. The kinetic energy of the wind can be used to turn a turbine which in turn produces:
    1. Carbon Dioxide
    2. Electricity
    3. Ethanol
    4. All of these
33. Physics is one of the branches of.
    1. Physical sciences
    2. Biological sciences
    3. Social science
    4. Life science
34. The molecules of the matter are always remains in state of:
    1. Rest
    2. Plasma
    3. Motion
    4. Tension
35. Our earth is a:
    1. magnet
    2. particle
    3. both a & b
    4. None of these
36. A body of weight 100 N is lifted to height 10 meter in 2 seconds. What is its potential energy?
    1. 100 J
    2. 500 J
    3. 1000 J
    4. 2000 J
37. The process of studying and developing technology is called:
    1. engineering
    2. law
    3. theory
    4. hypothesis
38. Mass per unit volume is called:
    1. speed
    2. velocity
    3. density
    4. pressure
39. Magnetic field lines.
    1. are farthest at poles
    2. intersect each other
    3. are closed
    4. do not pass in vacuum
40. Energy is a quantity:
    1. Derived
    2. Base
    3. Scalar
    4. Both a & c
41. Technology is the application of:
    1. scientific knowledge
    2. scientific principle
    3. engineering
    4. science
42. The sum of kinetic energy and potential energy is called:
    1. Energy
    2. Kinetic energy
    3. Internal energy
    4. None of these
43. When two current carrying wires in the same direction are placed parallel near each other, due to magnetic field produced by each wire they.
    1. repel each other
    2. attract each other
    3. have no effect on each other
    4. stop moving the current through them
44. A car, an elephant and a cricket ball have same kinetic energies. Which of these have greater speed?
    1. Car
    2. Elephant
    3. Cricket ball
    4. All have same speed
45. Civil engineering focus on:
    1. animal
    2. plants
    3. design and building
    4. internal structure of earth
46. The SI unit of density is:
    1. kg/m3
    2. kg/m2
    3. kg/m1
    4. kg/m
47. In magnetics, unlike poles are:
    1. repel
    2. attract
    3. neutral
    4. none of these
48. Which one is renewable source of.
    1. Coal
    2. Natural gas
    3. Sunlight
    4. Uranium
49. What is the best definition of the term "theory" as it us used in science?
    1. A theory is a guess or hunch about something that has occurred in nature
    2. A theory is a comprehensive set of ideas explaining a phenomenon in nature
    3. A theory is based on verifiable laws and can be proven true
    4. A theory is a hypothesis that uses laws and observation to make an assumption
50. In which of the materials, particles have only vibrational motion?
    1. Solid
    2. Liquids
    3. Gas
    4. Plasma
51. Magnetic field lines are:
    1. straight
    2. parallel
    3. circular
    4. all of these
52. What type of molecules are fossil fuels rich in?
    1. Carbohydrates
    2. Proteins
    3. Hydrocarbons
    4. Nucleic acids
53. The study of internal structure of earth:
    1. geo physics
    2. bio physics
    3. optics
    4. all of these
54. Temperature is directly proportional to:
    1. Potential energy
    2. Kinetic energy
    3. Heat energy
    4. Both B & C
55. The SI unit of magnetic field is:
    1. current ampere
    2. Coulomb
    3. farad
    4. Tesla
56. Total energy of the system:
    1. increase
    2. decrease
    3. remain constant
    4. all of these