PPSC PHYSICS-Mock Test-02

02- Which of the following is used for the failure of a lens to form a sharp and distinct image?

03- At the resonance the value of power factor in an L.C.R series circuit is:

04- Generally one house power (HP) is equal to how many watts?

05- Two parallel wires carrying current in the opposite direction:

06- Lux is the unit of:

07- Which of the following is used for reducing spherical aberrations in optical instruments?

08- The penetrating power of x-rays increase with:

09- It is possible to distinguish between transverse & longitudinal waves by studying the property of:

10- ERG stands for:

11- Which Muslim scientist is regarded as "father of optics"?

12- Candela is the SI base unit of:

13- Which one of the following waves cannot be polarized:

14- A dimensionless quantity is a quantity without an associated physical dimension. Which of the following is not a dimensionless quantity?

15- Power of lens is measured in:

16- Alternative current is converted to direct current by a:

17- The SI unit of magnetic flux density is:

18- An electric or magnetic field cannot accelerate:

19- Candela per square is the SI unit of:

20- Which Muslim scientist gave the first clear description and correct analysis of pinhole camera in the Book of Optics (Kitab al-Manazir) in 1021 AD?

21- The SI derived unit of magnetic flux is:

22- The SI unit of solid angle is:

23- In CGS system, the unit of magnetic field intensity is:

24- If the distance between two charges is doubled the coulomb force will become:

25- Which one of the following represents a travelling wave:

26- There are........... Planets in orbit around the Sun:

27- When while light passes through a prism, it splits into_______ colours:

28- Air bubble in water shines because of the phenomenon of:

29- Pa(Pascal) is the unit for:

30- Which from the following is NOT a Renewable Energy?

31- Siphon will fail to work if:

32- Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:

33- If we add all the 7 colours of rainbow (red, yellow, blue, green, violet and indigo), the resultant colour would be?

34- Ozone layer protects the Earth from____ radiations from the Sun:

35-Radiocarbon is produced in the atmosphere as a result of:

36- Short-sight defect could be corrected by a:

37- Nuclear sizes are expressed in a unit named:

38- Planets are kept in orbit by the?

39- What are primary colors?

40- Planets do not twinkle because:

41- Light year is unit of:

42- Stars appears to move from east to west because:

43- Light from sun reaches us in nearly:

44- A camera uses a _______ to form an image on a piece of film at the back:

45- Mirage is due to:

46- The absorption of ink by blotting paper involves:

47- Red + Green + Blue = ?

48- Sun and other stars are virtuously huge nuclear explosion chambers producing a large amount of head and light yet, we do not hear any of the explosions because A. Heat and light are electromagnetic:

49- It is easier to roll a stone up a sloping road than to lift it vertical upwards because:

50- The distance of Moon from the Earth is______ km:

51- Which one of the following can be used to focus sunlight?

52- The Phenomenon of land and sea breeze is as a result of:

53- Air bubble in water shines because of the phenomenon of:

54- The energy of a body due to its motion is called:

55- Sun and the other stars are virtually huge nuclear explosion chambers producing a large amount of heat and light. Yet, we do not hear any of the explosion because of:

56- The silvered surface of thermos flask prevents the transfer of heat by:

57- When abeam of light is passed through a transparent medium, however clear or homogeneous the medium may be, there is always a certain amount of light scattered sideways, out of the beam. This is known as:

58- On passing through foodstuff, the x-ray can kill the:

59-Argon laser is used for operating the:

60- When the wind blows at high velocity, rooftops are blown off because of pressure:

61- Sound travels faster in:

62- Ice floats on water because the density of ice is less than that of water, out of the following what part of giant icebergs remains above water?

63- When light enters from rare to denser medium, it bends towards the normal line, it is called:

64- Choke coil is a coil of:

65- Which of the following colour of light travel through, glass with minimum speed?

66- A Polaroid is:

67- The tendency of a liquid drop to contract and occupy minimum area is due to:

68- Soldier crossing a suspension bridge, always break steps, in case the frequency of vibration of their marching should coincide with that of the bridge and this is because of the phenomenon of:

69- Electromagnetic waves travel with:

70- Which of the following gives the correct descending order of elasticity in the substances?

71- Conductors, insulators and semi-conductors differ from each other due to the property of:

72- On which principle does the tape-recorder function?

73- Which one of the following colours has the longest wavelength?

74- When a constant force is applied to a body it moves with uniform:

75- Which of the following is a good conductor of electricity?

76- How many types units are in SI?

77- Prefix deca represents:

78- ML-1 T-2 is the dimension of:

79- Which branch of science plays an important role in the development of technology and engineering?

80- One pico stands for:

81- Which equation is not dimensionally correct?

82- Number of significant figures in 0.0173 are:

83- The unit of force is______ and its symbol is______. Which is the correct pair?

84- SI unit of coefficient of viscosity is:

85- Smaller the least count of the instrument more is the measurement:

86- Dimensional analysis is helpful for:

87- Unit of G is?

88- One light year is equal to:

89- 1024 can be written in scientific notation as:

90- The error in measurement may occur due to:

91- The dimension of force is:

92- Three students measured length of a needle with meter rod and recorded as: (i) 0.2145m (ii) 0.21m (iii) 0.214m. Which one is correct record?

93- How many main frontiers of fundamental science?

94- Which one is the highest power multiple?

95- In any measurement the significant figures are:

96- The number of categories in which physical quantities are divided are:

97- Total uncertainty, in result obtained from the subtraction of two measurement, is equal to:

98- The uncertainty in measurement may occur due to:

99- In scientific notation numbers are expressed in:

100- An ideal standard of measurement of a base quantity has characteristics: