PPSC PHYSICS-Mock Test-03

02- The blurring of the image due to dispersion in lens is called:

03- Z-component of r x p:

04- The following is an intensive coordinate of a thermodynamics system in equilibrium:

05- The type of work which can not be described in macroscopic thermodynamics:

06- Electromagnetic waves transport:

07- A double convex air bubble in water acts as:

08- Which law states that the ratio of the angles θa and θb is equal to the inverse ratio of the two indexes of refraction?

09- The quantum number which not involved in describing the orbit of an atomic electron is:

10- Newton's corpuscular theory failure to explain which phenomenon of light?

11- Some amount of heat given to gas under isothermal condition will result in:

12- Electromagnetic wave theory was proposed by:

13- Who set forwarded the corpuscular theory of light?

14- What are SI units of Plank's constant?

15- Which of the following properties exhibits that light waves are transverse in nature?

16- The dependence of wave speed and index of refraction on wavelength is called:

17- Which of the following are electromagnetic waves?

18- The ionization energy of an atom relative to binding energy of its nucleus is:

19- In thermodynamics, work done by the system is taken as:

20- If two system "A" & "B" are in thermal equilibrium with a system "C" the ..............................are equilibrium:

21- The light speed is vacuum depends on:

22- The band of colours is called:

23- Macroscopic greater & sometimes smaller assumption on about (I) structure of matter (II) radiations (III) fields:

24- Huygen's wave theory fails to explain:

25- The larges class of elementary:

26- A convex lens of focal length 20 cm, is used to form an erect image which is twice as long as the object. Find the position of the object?

27- The number of significant figures in 5.400 are:

28- Which of the following is not a correct representation method for prefixes:

29- Which one is the derived quantity in SI units?

30- The total angular momentum of a system of particles is constant if the net external torque acting on the system is:

31- ΔV/ΔS is the rate of change of potential with respect to the distance and it is called:

32- The number of significant figures in the length of a bar 6200mm measured by meter rod are:

33- Which pair of the following is vector:

34- A simple pendulum completes one oscillation in 2 second. Calculate its length when g=9.8 m s^-2, the time period of simple pendulum is:

35- In the British Engineering system, the unit of power is:

36- The number 76.85 is rounded off upto two significant figures as:

37- The electron acquires a speed of 10^6 ms^-1. Find its energy in electron volts:

38- Two forces equal in magnitude but opposite in direction and not acting along the same line constitute a:

39- neutron travels a distance of 12 m in a time interval of 3.6x10^-4 s. Assuming its speed was constant, find its kinetic energy. Take 1.7x10^-27 kg as the mass of neutron:

40- To reduce the uncertainty in the timing experiment:

41- In multiplication and division of measurement:

42- 1 Kwh=

43- The S.I unit of angular momentum is:

44- If A is perpendicular to B, I.e θ=90, or one of the two vectors is a null vector then A.B will be:

45- Zero error of the instrument is a type of:

46- The induced current always flows in such a direction as to oppose the change which is given rise to it, This state of:

47- l=V/R, This equation is known as:

48- Earth quake waves are an example of:

49- The value of the gravitational constant G is:

50- Calculate the centripetal acceleration and centripetal force on a man whose mass is 80 kg when resting on the ground at the equator if the radius of earth is 6.4x10^6 m:

51-A person climbing a hill bends forward in order to:

52- For hydrogen atom the energy needed to ionize it is......... Electron volts and the corresponding ionization potential is:

53- When the door of an operating refrigerator is opened the temperature of the room will:

54- A material consisting of the fissionable isotope is called:

55- On earth a moving body ordinarily comes to rest by it self because of the:

56- A basic electric instrument which is used for the detection of small current:

57- The energy stored in a stretched spring is:

58- The unit of magnetic flux is:

59- A moving ball stops due to action of:

60- On earth a removed from an electric bulb to prevent:

61- A potential is a device for measuring the:

62- The energy stored in the fossil fuel is:

63- The process of combining audio frequency (a-f) and radio frequency (r-f) waves to accomplish translational is called:

64- When body is dropped from a certain height, the gravitational potential energy is converted into:

65- Human body converts chemical potential energy of food into:

66- A portable device which is widely used for the detection of ionizing particle or radiation:

67- Two parallel wires carrying currents in the same direction attract each other because official:

68- Energy of a body due to its motion is called:

69- In a refrigerator, cooling is produced by:

70- Electrochemical energy is required for the working of:

71- An electric motor is used to convert:

72- ΔxΔpx≥h/2π=

73- When cat laps for its prey them the chemical energy presents in its muscles is converted to:

74- The length of a measuring rod is 1m when it is at rest. What will its length be if it is moving with a velocity one third of the speed of light:

75- In cells chemical energy is transformed into:

76- When the frequency of an EM wave and ultrasonic wave are same then:

77- The eye's ability to focus near as well as distant objects is termed what?

78- What happens in the phenomenon of interference?

79- Least distance of distinct vision:

80- Which parameter is an indication of colour of star?

81- Colour of light is determined by its:

82- Though the temperature inside lighted electric bulb is around 2700c, the filament does not burn because:

83- Photometers are used to measure:

84- The branch of optics deals with the nature and propagation of light is called:

85- A remote control gadget (for TV etc.):

86- Which lens is used for curing colour blindness?

87- Short sightedness in the eye occurs due to the:

88- Which of the following is not EM in nature?

89- Which of the following is used as a remedy for defect of hypermetropia?

90- The linear distance between succession points having same phase in a wave disturbance is called:

91- Which of the following factors determines the resolving power of an instrument?

92- Semi -conductor is such a substance, whose ability to conduct current lies in between:

93- Which of the following phenomenon can not be explained by Newton's corpuscular theory?

94- A biprism consists of:

95- A young man wearing glasses does not require bifocals because he:

96- Monochromatic light passing through a thick prism is:

97- Kellner or Achromate eye-piece consists of:

98- Which phenomenon is responsible for formation of shadows?

99- Which of the following colour of light passes through glass with minimum speed?

100- Which of the following is an important property of EM waves?