PPSC PHYSICS-DEMO TEST (SMART INSTITUTE)

02-The number of significant figures in 0.005005 are:

03-A car starts from Lahore and goes 60 km north towards Gujranwala. After travelling 60km, the car immediately turns round and returns to Lahore. The total time for this round trip is 2 hours. The magnitude of average velocity of the car for this round trip is:

04-The term mass refers to the same physical concept as that of........

05-The amount of work required to stop a moving object is....

06-The momentum of an object at any particular of time is independent of its.....

07-Sphere A has mass with and is moving with velocity v. It makes a head on elastic collision what a stationary sphere B of mass 2m. After the collision their speed (Va and Vb) are

08-An ice skater with rotational inertia Io is spinning with angular speed wo . She pulls her arms in, thereby increasing her angular speed to 4wo. Her rotational inertia is then 1/4

09-If the radius of earth is expressed by R and mass of the earth is represented by M. The ratio of gravitational acceleration g to the universal gravitational constant G I.e (g/G) on the surface of the earth is

10-A spring scale is calibrated in newtons and its used to weigh sugar. If it were possible to weigh sugar at the following locations, the buyer will get the most sugar in newtons at ..........

11-Metal pipes used to carry water, sometimes burst in the winter because.....

12-The building are kept cooler in summer with light colored shades instead of dark colored windows. This is because light colored shades......

13-The difference b/w the molar specific heat at constant pressure and the molar specific heat at constant volume for an ideal shades.....

14-If a heat engine is doing a positive work in each cycle while losing some energy as heat, with no heat energy input, is a clear voltation of......

15-If λ is the wavelength of each of the component sinusoidal traveling waves that form a standing wave, the distance b/w adjacent nodes in the standing wave is.......

16-If the pitch of an approaching siren is increasing, it is apparently due to increase in its.....

17-The process of waves appearing with different intensity at a point where a number of waves pass through a point in a medium is known as ...... Of wave.

18-If a1 and a2 the amplitudes of two waves in Young's double slit experiment, then the maximum intensity of interference fringe is ....

19-In Young's double slits experiment if the separation b/w the slits is reduced to half and the distance of the screen from the slits is doubled, then the fringe width is

20-The produce circularly polarized light, the phase difference b/w two perpendicularly polarized rays of equal magnitude should be.....

21-Which of the type of waves cannot be polarized?

22-A tuning fork produced waves in a medium. If temperature of the medium changes, then ...... Of the waves will change, as well.

23-WOF properties make difference b/w stationary and progressive waves?

24-If K denotes 1/4πϵ0 . The magnitude of the electric field at a distance r from an isolated point particle with change q is .....

25-The electric field due to a uniform distribution of charge on a spherical shell is zero

26-An electron travels due to north through a vacuum in a region of uniform magnetic field B that is also directed due to north. The electron will......

27-The zeroth law of thermodynamics helps us to define....

28-The 2nd law of thermodynamics when stated with reference to heat engine is called...

29-The equation of state for n moles of a ideal gas is PV=nRT. SI unit for the universal gas constant R is....

30-The hydraulic automobile jack works on the basis of......

31-At high altitude some persons feel that the blood flowing out of the nose or ear. This is because.....

32-A body of mass m moving at a constant velocity hits another body of the same mass moving with a velocity V/2 but in the opposite direction and sticks to it. The common velocity after collision is...

33-The statement that magnetic field lines form closed is a direct consequence of.......

34-A person with nearsightedness will use eyeglasses having....

35-Light from stars shows an apparent change in frequency because of......

36-The electric flux is negative when angle b/w A and E is:

37-Newton's law of gravitation b/w two mass particles resembles with.....

38-THE speed of charging or discharging a capacitor depends upon the product of capacitance and.....

39-The magnitude of the force on a moving charge carrier is maximum when angle b/w the velocity of the carrier and the magnetic field is.......

40-The armature current in a DC motor is maximum when the motor has....

41-A charge qv is moving in a magnetic field. If the velocity of the charge is doubled somehow, the force acting on it would.......

42-Which Maxwell's equation predicts that a monopole doesn't exist?

43-Electromagnetic waves carry.......

44-Two parallel wires carrying current opposite direction will....

45-When a neutrons is captured by a proton, it results in the formation of......

46-The sub-atomic particles having mass equal to/greater than of protons are......

47-Photoiode works when it is.....

48-One proton is composed of ........

49-In nuclear reactors, moderator are used to......

50-WOF are not electromagnetic radiations?

51-The rate of decay of a radioactive element...

52-WOF detector of radiations is the most efficient?

53-A monochromatic red beam of light cannot be......

54-Crystalline materials are divided into 7 crystal system. The number of Bravas lattices is:

55-The packing fraction of face-centered cube( fcc) unit cell is:

56-In order to produce diffraction in crystals with X-rays the spacing b/w the consecutive lines of grating should be of the order of ....... angstroms.

57-In 1912,Laue suggested that a crystal can serve as a ...... Grating for X-ray diffraction.

58-The most probable position of a particle in one-dimensional potential well of width L in the first quantum state is .......

59-According to band theory a freely moving electron inside a metal experiences..... Potentials of positive ions.

60-The magnetic dipole moment of neighboring atoms are anti-parallel and unequal for ...... Magnetic materials.

61-Megnetic dipole moment per unit volume of a material is termed as

62-With increase of temperature, the fermi energy level ...... In n-type semi-conduction.

63-A rectifier is a device that......

64-The energy band gap in a superconductor is maximum at.......

65-The intensity of an applied magnetic field decreases ..... With depth from the surface of a superconductor.

66-The attenuation of electromagnetic waves in a good conducting medium is ......

67-The quantum number n is most closely associated with what property of the electron in a hydrogen atom?

68-In a good conductor, the skin depth is .... Proportional to the attenuation constant.

69-A LASER beam can be sharply focused because it is.........

70-The fermi Dirac occupancy probability P(E) varies b/w ........

71-WOF is not needed in a nuclear fission reaction?

72-Exclusive OR(XOR) logic gate can be constructed from.........

73-The cause of magnetism in magnetic materials is..............

74-Above ...... Temperature an anti-ferromagnetic substance becomes paramagnetic.

75-Number of independent formulation(s) of quantum mechanics are...........

76-The quanta of lattice vibration is known as ........

77-WOF light is suitable for maximum resolution?

78-The tangential acceleration of a point on a rotating object is the product of the distance of the point from the axis of rotation and the

79-Two masses, M and m are huge vertically down to the earth over a mass less, frictionless pulley. If M>m than the downward acceleration of mass M is .........

80-A body of mass m is moving in a circle of radius r with a constant speed v. The work done when body completes on revolutions is

81-Basic unit of a worksheet into which data can be entered in excel is called:

82-A"Scanner" Device

83-A shop gives 4 points for every Rs. 75 spent by customers. Ali earned 36 points. How much Ali spend at the store?

84-If two angles of a triangle are 60 degree each then what is the value of the third angle

85-Convert to passive voice: "Who gave you permission to enter"?

86-Fill in the blank: The plot of the novel was ...... it was completely incomprehensible.

87-Fill in the blank: Abdul grabbed the boy and rolled him on the ground to .....the flames.

88-Complete the proverb, "The earth bird catches the.........

89-Name the general type of mammals that gives birth to underdeveloped young that are kept in pouches during eseening period?

90-Study of poisons is called:

91-The famous movie "Slumdog Millionaire" is based on the book "Q" and "A" who is the author of this book.

92-The Bermuda triangle in the Atlantic ocean, is famous for:

93-What was the real name of Genghis Khan?

94-Under the 1973 constitution, protection of the Rights of Minorities is described in Article:

95-Who became the First Viceroy of India?

96-What is the ancient Greek name for river Jhelum.

97-Joune 2017 which country pulled out of the Paris Climate Agreement?

98-Non Permanent members of the UN security Council ate elected for a fixed term of:

خاکوں پر مبنی معروٝ کتاب "جو ملے تھے راستے میں"کے مصنٝ ۝یں-99

100-"نامل ٹؤ یے مارنا"- اس کا مطلب ۝ے-