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Friday, November 21, 2008 |
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Home . News . Education . Health . Shopping . Religion . Immigration . Jobs . Teachers . Web Directory . Awami Masail |
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Multiple
Choice Questions
1. The oar of a boat is an example of the ____________ kind of lever.
.(First, Second, Third)
2. One microcoulomb = ____________ coulomb.
(10-6, 10-9, 10-12)
3. The commercial unit of electrical energy is ____________.
(Joule, Newton, Kilo-watt-hour)
4. If the mass of a body is 5 kg, its weight will be ____________ N.
(4.9, 49, 94)
5. Evaporation takes place at ____________.
(O°C, 100°C, all temperature)
6. The writer of the famous book “Al Manazir” is ____________.
( Bu Ali Sina, Ibn-al-Haitham, Yaqoob Kindi, Alberuni)
7. The equation Me = ____________ is used to determine the mass of the earth.
(gG/Re2, GRe2/g, G/gRe2)
8. The time period of second’s pendulum is ____________ second(s).
(1, 2, 3, 4)
9. One calorie is = ____________ joule(s).
(4, 2, 0.42, 42, 4200)
10. One micro ampere = ____________ ampere.
(10-2, 10-3, 10-6)
11. The famous book Kitabul Manazir was written by the Muslim scientist ____________.
(Al-Beruni, Ibn Musa Alkhwarizmi, Ibn-ul-Haitham)
12. Three resistors of 3 ohms each connected in parallel have a combined resistance of ____________ ohm.
(1, 9, 27)
13. Centripetal force = ____________.
(mr/v2, rv2/m, mv2/r)
14. The focal length of a converging lens whose power is 5 dioptre is ____________ cms.
(1/5, 20, 5)
15. An iron nail sinks in water because the upthrust on it is ____________ its weight.
(greater than, smaller than, equal to)
16. By increasing the length of a conductor its resistance ____________.
(increases, decreases, remains the same)
17. In a mirror or lens if the object distance is 4 cm, the magnification will be ____________.
(2, 0.5, 8)
18. The image of an object formed by a microscope is ____________.
(real and diminshed, real and magnified, virtual and magnified)
19. If the weight of a body is 29.4N, its mass will be ____________ kg.
(1, 2, 3, 4)
20. The image formed by the objective of a compound microscope is ____________.
(Real and diminished, real and magnified, virtual and diminished, virtual and magnified)
21. The density of water is maximum at ____________°C.
(100, 4, 0, -4)
22. The second’s pendulum is a simple pendulum whose time period is ____________ seconds.
(1, 2, 3, 4)
23. Ibnul Haitham contributed towards ____________ physics.
(Acoustical, Thermal, Optical, Chemical)
24. The name of the famous book of Alberuni was ____________.
(Kitab-ul-Manazir, Aljabar-wal-Muqabla, Qanoon-al-Masudi, Zij-al-Khani)
25. The founder of algebra, a famous Muslim scientist born in 780 was ____________.
(Alberuni, Al kindi, Al Khawarzmi, Naseer-ud-din Tussi)
26. The name of a Muslim scientist who was born in Basra and made several discoveries on music and acoustic was ____________.
(Alberuni, Al Kindi, Al Khawarzmi, Naseer-ud-din Tussi)
27. Dr. A Salam was awarded Noble Prize for his work on ____________.
(Electronics, Radiation, Grand Unification Theory, Gravitation)
28. 10-9 is called a ____________.
(Desisecond, Millisecond, Microsecond, Nanosecond)
29. The fundamental unit of length in S.I unit of measurement is ____________.
(Kilometer, Meter, Yard, Foot)
30. The standard meter is made of ____________ and is placed at the international Bureau of Weights and Measures in Sevres near Paris.
(Platinum and Iridium Alloy, Platinum and Copper Alloy, Iron and Copper Alloy, Iron and Iridium Alloy)
31. If two quantities are directly proportional to each other the graph between them will be a ____________.
(Circle, Straight line, Curve)
32. ____________ is a vector quantity.
(Mass, Torque, Distance, Time)
33. ____________ is a scalar quantity.
(Displacement, Force, Speed , Velocity)
34. Two forces of 3N and 4 N are acting on a body. If the angle between them is 90° then magnitude of the resultant force is ____________N.
(1, 5, 7, 12)
35. The unit of torque in international system of units is ____________.
(Newton, Kilogram, Newton-Meter, Meter)
36. For a force F, Fx = 6N and Fy = 6N. What is the angle between F and x-axis.
(less than 30°, 60°, 30°, greater than 60°, 45°)
37. By dividing the displacement of a moving body by the time taken we obtain ____________.
(Average speed, Average Velocity, Uniform Velocity, Acceleration)
38. If the velocity of a moving body decreases by equal amound in equal intervals of time, however small they may be, the body is said to have ____________ acceleration.
(Zero, uniform and positive, uniform and negative)
39. The velocity and acceleration of a body moving with a uniform speed a circle are ____________.
(parallal, Mutually perpendicular, Opposite)
40. Two balls having different masses are thrown upwards simultaneously towards the roof of a building. They will reach the roof ____________.
(simultaneously, one after the other (heavy ball first), one after the other (light ball first))
41. By applying equal force on spheres of plastic and iron of equal volumes, greater acceleration is produced in the plastic sphere because its mass is ____________.
(More, Less, More but m is less, Less but m is more)
42. The S.I unit of force is ____________.
(Metre, m/s, Kg, Newton)
43. The unit of coefficient of friction is ____________.
(Newton, Kilogram, Metre, None)
44. Friction can be reduced by using ball bearings because they ____________.
(make the surface plane, make the suface grassy, convert sliding friction into rolling friction, have no friction of their own)
45. If the force acting on a body is doubled, then the acceleration produced is ____________ m/s2.
(1/2, 1/4, doubled, quadrapled)
46. When a horse pulls a wagon, the force that causes the horse to move forward is the force____________.
(He exerts on the wagon, the ground exerts on him, the wagon exerts on him, the wagon exerts on ground)
47. ____________ is the best approximation of the weight of an object of mass 800 gram.
(88N, 80N, 8N, 0.8N 0.08N, 7.84N)
48. A body is said to be in a state of neutral equilibrium if its centre of gravity is ____________.
(Below the point of suspension, above the point of suspension, At the point of Suspension)
49. A body is said to be in equilibrium if it is moving with ____________.
(Uniform velocity, Uniform Acceleration, Variable Velocity)
50. Torque about an axis is defined as the product of ____________.
(Mass and Force, Force and Moment Arm, Mass and Acceleration)
51. The centre of gravity of a body is a point where ____________.
(the torques acts, The weight of the body appears to act, the external force acts)
52. In first condition of equilibrium the ____________ condition is satisfied.
(SG = 0, SF = 0, SP = 0)
53. The gravitational force between two bodies depends upon the product of their masses in addition to the ____________ them.
(Distance between, Shape of bodies, Medium between, Sum of masses)
54. G is called ____________.
(Gravitational attraction, Acceleration due to gravity, Gravitational Force, Gravitational Constant)
55. If a stone is tied to the end of a string and whirled in a circle the tension in the string provides ____________.
(Centripetal Force, Centrifugal Force, Pressure, Reaction)
56. If the mass of a body moving in a circle with a uniform speed, is doubled then its centripetal force becomes ____________.
(Twice, Three times, Four times, eight times)
57. If the uniform speed of a body moving in a circle is doubled, its centripetal force becomes ____________.
(Twice, Three times, Four times, Eight times)
58. Energy possessed by a body by virtue of its motion is called ____________ energy.
(Potential, Electrical, chemical, Light, Kinetic)
59. Work is done when a body is moved through a distance by a ____________.
(Fulcrum, Inclined Plane, Mechanical Advantage, Force)
60. The unit of work is ____________.
(Watt, Joule, newton, Kilogram)
61. If the speed of the body is doubled, its kinetic energy becomes ____________.
(half, twice, three times four times)
62. ____________ is same as a kg m/s2.
(Joule, Newton, Watt, Kilo watt)
63. A ____________ is a simple machine.
(sewing machine, a petrol engine, a bicycle, pulley)
64. If the fulcrum of a lever is between the effort and resistance, it is a ____________ class lever.
(First, Second, Third)
65. A pair of scissors is an example of a ____________.
(pulley, lever, wheel and axle, inclined plane)
66. ____________ belong to the second kind of lever.
(Pair of scissors, Pair of forceps, door)
67. Molecules of matter are always busy in ____________ motion.
(never ending random, ceasing random, never ending regular, ceasing and regular)
68. Force of attraction between the molecules is ____________ proportional to the distance between them.
(Inversely, directly, squarly, square root)
69. The molecular theory of matter was experimentally testified by ____________.
(Hooke, Archemedies, Brown, Pascal)
70. The S.I unit of pressure is ____________.
(Pascal, Newton, Kilogram per cube meter, Newton meter)
71. The increase in volume is called ____________.
(Linear Expansion, Super Ficial Expansion, Volumetric Expansion)
72. The stopper of a glass bottle when stuck in its neck is taken out by heating the ____________ of the bottle.
(Stopper, Bottom, Neck)
73. When water is changed into ice, it ____________
(Expands, Contracts, becomes heavy)
74. The molecules of a solid ____________.
(move about haphazardly, remain stationary, vibrate)
75. A piece of metal becomes hot when it lies in the sun through ____________ .
(Conduction, Convection, Radiation)
76. A body with frequency f would complete one vibration in ____________ second.
(1/f, 1/f2, 1, f)
77. If the length of the pendulum becomes four times, its time period will become ____________.
(foureimes, twice, three times, eight times)
78. In transverse waves the distance between two consecutive crests or between two consecutive troughs is called ____________.
(Displacement, Wavelength, Velocity, Speed)
79. If the mass attached to a spring becomes four times, the time period of its S.H.M will become ____________.
(twice, three time, four times, eight times)
80. If frequency of waves f = 30cycles per second and the wavelength l = 0.2m, then the velocity of waves is ____________ per second.
(6, 150, 0.0066, 8)
81. The waves produced by a vibrating body in air are ____________ waves.
(Longitudinal, Transverse, Electromagnetic, Magnetic)
82. Speed of sound in air at normal temperature pressure NTP is ____________ m/s.
(336, 672, 712, 785)
83. The image formed in plane mirror is ____________.
(Real, Inverted, Virtual and erect, Real and Inverted)
84. If the inner surface of a spherical mirror is reflecting it is called ____________ mirror.
(Plane , Concave, Convex)
85. All the rays, parallel to the principal axis falling on a concave mirror, pass after reflection through its ____________.
(Pole, Principal Focus, Centre of Curvature)
86. If an object is placed at the centre of curvature of a concave mirror ____________ and ____________ image is formed.
(Virtual. Erect and Elarged, Real, inverted and small, Real , inverted and Equal, Real, inverted and enlarged)
87. If q =4 cm and = p = 2 cm, then the magnification of the mirror is ____________.
(2, 0.5, 4)
88. When a ray of light enters obliquely from one medium into an other it deviates from its original path. The phenomenon is called ____________.
(Reflection, Smaller than, Equal to, Unrelated to)
89. When a ray of light enters obliquely from a rarer into a denser medium, then angle of refraction is ____________ angle of incidence.
(Greater than, smaller than, equal to, unrelated to)
90. If an object is situated between the optical centre and the principal focus of a convex lens, then its image is formed on the same side as that of the object. This image will be ____________.
(Inverted, real and bigger in size, inverted, real and of the same size as that of object, inverted, real and smaller in size, erect, virtual and large in size)
91. For total internal reflection the angle of incidence must be ____________ the critical angle.
(greater than, smaller than, equal to, half of)
92. A convex lens is ____________.
(thiner at the centre, thicker at the centre, a diverging lens, plane throughout)
93. The eye and the camera are similar because the image formed in both is ____________.
(Real, inverted and small, Real, erec and small, virtual, erect and small, real, inverted and enlarged)
94. In a photographic camera, a convex lens is used because it ____________.
(produces a real and small image, gives virtual image, produces an enlarged image, forms an image equal in size to the object)
95. The objective of a refracting telescope is a ____________.
(double convex lens, Convex mirror, Plane Mirror, Concave Mirror)
96. A single diverging lens is used in ____________.
(Magnifying Glass, A camera, the objective lens in a telescope, spectacles for the correction of short sightedness)
97. The pupil of the eye controls ____________.
(The focal lenght of the eye, The range of accommodation of eye, the distance of distinct vision, the amount of light reaching the eye)
98. The speed of light is ____________.
(3 x 106, 1.86 x 106, 3 x 108, 3 x 1010)
99. Small drops of rain water disperse sunlight into different colours. This is called ____________.
(Dispersion, Interference)
100. According to Quantum theory of light photons are ____________.
(Waves, Electromagnetic waves, Energy Packets, Particles)
101. According to Hygen’s wave theory, light propagates in the shape of ____________.
(Photons, Waves, Particles)
102. We use a ____________ to disperse white light into different colours.
(Convex mirror, Prism, Convex lens, Concave Mirror)
103. The radiation which produces the sensation of heat is called ____________.
(Invisible Light, Ultra-Violet Rays, Infrared rays, visible light)
104. Electromagnetic waves carries ____________.
(Wavelength, Frequency, Charge, Energy)
105. ____________ are not electromagnetic in nature.
(Infrared rays, Ultra-violet rays, Radar waves, Sound waves)
106. A ray of white light is shone onto a glass prism. The light can not be ____________.
(Deviated, Dispersed, Focussed, Refracted)
107. ____________ has the shortest wavelength.
(Radio waves, Infrared Rays, Ultra Violet Rays, X-rays)
108. ____________ revolves around the nucleus in their respective orbits.
(Neutrons, Protons, Electrons)
109. The lightest particle in an atom is ____________.
(Neutron, Proton, Deutron, Electron)
110. If the quantity of charge on each of the two bodies is doubled, the force between them becomes ____________.
(twice, four times, nine times, sixteen times)
111. The value of constant that occurs in coulombs force formula is ____________ Nm2/C2.
(9 x 10-9, 9 x 10-16, 9 x 109, 9.9 x 10-9)
112. If two joules of energy is required to transfer one coulomb of charge from one point to another, the potential difference between these points will be ____________ volt.
(1, 2, 4, 6)
113. The substance used as a medium between the two plates of a capacitor is known as ____________.
(conductor, semi-conductor, dielectric, electrolyte)
114. if the charge on the plate of a capacitor is doubled, the potential difference between its plates will become ____________.
(half, double, four times, one third)
115. The unit of capacity is called ____________.
(Coulomb, volt, ampere, ohm, farad)
116. ____________ is that which is connected in series with the line wire in the electric circuit of a house.
(Galvanometer, Voltmeter, Fuse, Ammeter)
117. The commercial unit of electrical energy is known as ____________.
(Ohm, Volt, Ampere x second, coulomb, watt hour, kilo watt hour)
118. Electrical power in watts is obtained by the product of ____________.
(volt and coulomb, current and resistance, coulomb and ampere, volt and ampere)
119. The maximum value of alternating current in either direction is known as its ____________.
(Average, square, roo mean square, peak value)
120. One mega ohm resistance is equal to ____________ ohm.
(106, 10-6, 108, 102, 10-8)
121. In a gas discharge tube the electric current is due to flow of ____________.
(electrons, positive ions, neutrons)
122. ____________ is equivalent to Joule per coulomb.
(Ampere, ohm, volt, watt)
123. Like pole ____________ each other.
(Attract, Repel, Neither attract nor repel, Sometimes attract and some times repel)
124. The relation between electric current and the magnetic field was discovered by ____________.
(Newton, Faraday, Fleming, Oersted)
125. If a current is flowing through a solenoid, then the north pole of the solenoid can be found using ____________ rule.
(Right hand, Left hand, Faraday’s, Lenz’s)
126. A galvanometer can be converted into an ammeter by connecting a wire of low resistance ____________ with the galvanometer.
(In series, In parallel, In a combined way, in no way)
127. To measure current in a circuit an ammeter is always connected ____________.
(In series, In parallel, In any way, Parallel to Voltmeter)
128. The materials in which electric current can flow easily due to their low resistance are called ____________.
(Insulators, Semi conductors, Conductors)
129. The electric resistance of a semiconductor ____________ if temperature is increased.
(decreases, increases, does not change)
130. A p-type substance is formed when a semi conductor crystal is doped with a ____________ element.
(Divalent, Tetravalent, Pentavalent)
131. The current passing through a ____________ is directly proportional to the potential difference across its ends.
(Insulator, Semiconductor, conductor)
132. The frequency of radio waves lie in the range ____________.
(20Hz to 20KHz, 30kHz to 30MHz, 600 MHz and above)
133. ____________ geostationary communication satellite placed in the equatorial orbit at 120° from one another, can cover the whole populated land of the world.
(Three, four, Five)
134. A radio wave is produced by a ____________ alternating current.
(Low frequency, High frequency, Audio frequency)
135. To produce N-type crystal, germanium may be doped with a substance that is ____________ .
(Divalent, Trivalent, Tetravalent, Pentavalent)
136. For forward biasing a PN junction, the positive terminal is connected to ____________ .
(P-type crystal, N-type crystal, Neither P or N type crystal)
137. In p-type semi conductor most of current is carried by ____________.
(Electrons, Protons, Holes)
138. The number of protons in the nucleus is called ____________.
(Avogadro number, Atomic Number, Mass number, Nucleons Number)
139. The emission of rays from the nucleus is called ____________.
(Chemical process, Atomic process, Radio-activity, Atomic dispersion)
140. a-rays are found to be in ____________.
(electromagnatic waves, electrons, fastly moving neutrons, fastly moving helium nucleus)
141. An element whose atoms have same atomic number bu different mass number are called ____________.
(Molecule, Secondary element, Isotope,)
142. ____________ is most penetrating.
(a-rays, b-rays, ˇ-rays)
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