Test
Physics
Sheet-1-12
1. What is the basic unit of electric current ?
a. Ampere
b. Kelvin
c. Mole
d. Candela
2. Steradian is used to measure which among the following ?
a. Plane Angle
b. Solid Angle
c. Both a and b
d. Neither a nor b
3. Mass * Acceleration is the formula of which among the following ?
a. Velocity
b. Force
c. Weight
d. Displacement
4. Which among the following is/are present in a scalar quantity?
a. Magnitude Only
b. Direction Only
c. Both a and b
d. Neither a nor b
5. The branch of mechanics that deals with the motion of object is called _________
a. Static
b. Kinematics
c. Kinetics
d. None of the given
6. Which kind of quantity is displacement ?
a. Vector
b. Scalar
c. Either a or b
d. Neither a nor b
7. Which among the following features of velocity is/are correct ?
a. It is a vector quantity.
b. It is always positive.
c. Both a and b
d. Neither a nor b
8. What is the SI unit of Acceleration ?
a. m/s
b. m/s2
c. m/s3
d. None of the given
9. _________ is the pseudo force.
a. Centripetal
b. Centrifugal
c. Both a and b
d Neither a nor b
10. The net force applied on a body is equal to the product of mass of the body and the acceleration produced in it. This is …….. Law of Newton.
a. First
b. Second
c. Third
d. None
11. What is the SI Unit of Force ?
a. Watt
b. Joule
c. Newton
d. Candela
12. Every action have equal and opposite reaction. This is …….. Law of Newton.
a. First
b. Second
c. Third
d. None
13. If we slide or try to slide a body over a surface , the motion is resisted by a bonding between the body and the surface . The resistance is called _________.
a. Rolling Friction
b. Limiting Friction
c. Frictional Force
d. Static Friction
14. The opposite force that come into play when one body tends to move over the surface of another body but actually motion has yet not started is called __________.
a. Rolling Friction
b. Limiting Friction
c. Frictional Force
d. Static Friction
15. Which kind of quantity is Work ?
a. Vector
b. Scalar
c. Either a or b
d. Neither a nor b
16. What is the unit of energy under SI system ?
a. Watt
b. Joule
c. Newton
d. Candela
17. . ______ is the energy possessed by a body by the virtue of its position.
a. Kinetic Energy
b. Frictional Energy
c. Static Energy
d. Potential Energy
18. In a heat engine ………….energy changes into ___________ energy.
a. heat, mechanical
b. mechanical, heat
c. Both a and b
d. Neither a nor b
19. In microphone , …………energy changes into _________ energy.
a. electric, sound
b. sound , electric
c. Both a and b
d. Neither a nor b
20. Rate of doing work by a body is called _______.
a. Power
b. Watt
c. Joule
d. None of the given
21. How many principles of the liver are there in physics ?
a. Two
b. Three
c. Four
d. Five
22. Gravitation is a ………….. force.
a. short range
b. long range
c. Both a and b
d. Neither a nor b
23. This universal attractive force is called _________.
a. Force
b. Power
c. Watt
d. Gravity
24. If the Earth stops its rotation about its own axis , then at the equator the value of g ________, consequently the weight of body _______-
a. Increases
b. Decreases
c. Both a and b
d. Neither a nor b
25. When we go below the surface of the Earth, the acceleration due to gravity goes on _________.
a. Increasing
b. Decreasing
c. Either a or b
d. Neither a nor b
26. While decreasing the rotational motion of earth , the value of g _______
a. Increases
b. Decreases
c. Either a or b
d. Remains constant
27. If the area of a surface increases with same amount of force, the pressure…………
a. Increases
b. Decreases
c. Either a or b
d. Remains constant
28. __________is a unit of pressure based on an absolute scale.
a. Ohm
b. Atm
c. Torr
d. None of the given
29. Which instrument is used for measuring atmospheric pressure ?
a. Barometer
b. Galvanometer
c. Odometer
d. Hydrometer
30. Kg/m3 is the unit of which among the following ?
a. Weight
b. Pressure
c. Density
d. Force
31. Which instrument measures Relative Density ?
a. Barometer
b. Galvanometer
c. Odometer
d. Hydrometer
32. Density of human body is _____ that of water.
a. Less than
b. More than
c. Equal to
d. Either a or b
33. Who invented Safety Pin ?
a. Walter Hunt
b. I.C. Perier
c. Thomas Newcomen
d. James Watt
34. The pressure exerted anywhere at the point of confined fluid is transmitted equally and undiminished in all directions throughout the liquid. This is ________.
a. Bernoulli’s Theorem
b. Pascal Law
c. Coulomb’s Law
d. Stefan’s Law
35. _________ is the intermolecular force of attraction acting between the molecules of the same substance.
a. Regressive Force
b. Adhesive Force
c. Frictional Force
d. Cohesive Force
36. Which among the following is not the example of the Capillary Action ?
a. Kerosene oil in a lantern .
b. Writing nib broken in the mid to have fine capillarity.
c. Supply of fuel to the engine of vehicles
d. Water movement in plants.
37. __________ is the property of the liquid by virtue of which it opposes the relative motion between its adjacent layers.
a. Frictional Force
b. Surface Tension
c. Capillarity
d. Viscosity.
38. When an incompressible and non-viscuous liquid (or gas ) flows in streamlined motion from one place to another , then at every point of its path the total energy per unit volume remains constant , it is called ________.
a. Bernoulli’s Theorem
b. Pascal Law
c. Doppler Effect
d. Stefan’s Law
39. A pendulum clock goes slow in _______ and fast in ______ .
a. winter , summer
b. summer , winter
c. spring , autumn
d. autumn, spring
40. Sound waves are the examples of …………..
a. Longitudinal Waves
b. Transverse Waves
c. Both a and b
d. Neither a nor b
41. The longitudinal mechanical waves which lie in the range of _______are called audible or sound waves.
a. 2000 Hz to 20000 Hz
b. 200 Hz to 20000 Hz
c. 20 Hz to 20000 Hz
d. 20 Hz to 2000 Hz
42. Dog , Cat, Bat , Mosquito etc. can detect …………..waves.
a. Radio Waves
b. Infrared Waves
c. Micro Waves
d. Ultrasonic Waves
43. _________ produce ultrasonic waves .
a. Dog
b. Cat
c. Bat
d. Mosquito
44. Speed of sound in air is ________.
a. 3000000 m/s
b. 332 m/s
c. 3320 m/s
d. 320 m/s
45. The speed of sound increases with the ……….. in the temperature of the medium.
a. increase
b. decrease
c. Either a or b
d. Neither a nor b
46. If Mach number >5 , body is called ________.
a. Supersonic
b. Sub-sonic
c. Ultra-sonic
d. Hypersonic
47. If there is a relative motion between the source of sound and observer , the apparent frequency of sound heard by the observer is different from the actual frequency of sound emitted by the source. This phenomenon is called ______.
a. Bernoulli’s Theorem
b. Pascal Law
c. Doppler Effect
d. Stefan’s Law
48. At what temperature Celsius and Fahrenheit thermometers read same ?
a. 40 0C
b. 4 0C
c. -4 0C
d. -40 0C
49. What are the scales of the temperature measurements ?
1. Celsius
2. Fahrenheit
3. Reaumur
4. Pascal
Select the correct answer using the code given below :
a. 1, 2 and 3 only
b. 2, 3 and 4 only
c. 1, 2 and 4 only
d. 1, 2, 3 and 4
50. If we want to measure the temperature below – 39 0C , then we should use ?
a. Mercury Thermometer
b. Alcohol Thermometer
c. Either a or b
d. Neither a nor b
51. . ………is the outcome of human experience under which heat energy can be converted into mechanical energy.
a. The First Law of Thermodynamics
b. The Second Law of Thermodynamics
c. Either a or b
d. Neither a nor b
52. The ratio of amount of water vapour actually present in a certain volume of air at a given temperature to the amount of water vapour required to saturate it is called …………
a. Total Humidity
b. Absolute Humidity
c. Relative Humidity
d. None of the given
53. Which among the following statements is/are correct in context of the light waves ?
1. It takes 8 mins and 19 secs to reach the light on the Earth from the Sun.
2. The light reflected from moon takes 1.28 secs to reach Earth.
Select the correct answer using the code given below:
a. 1 only
b. 2 only
c. Both 1 and 2
d. Neither 1 nor 2
54. ………. is used as back view mirrors in vehicles, in street lamps etc .
a. Convex Mirror
b. Concave Mirror
c. Either a or b
d. Neither a nor b
55. Most of the images in the Concave Mirror are ……….
a. Virtual and Inverted
b. Real and Erect
c. Virtual and Erect
d. Real and Inverted
56. ……….. of the light is scattered least.
a. Red Colour
b. Blue Colour
c. Violet Colour
d. None of the given
57. Which among the following is not the primary colour ?
a. Red
b. Blue
c. Green
d. Yellow
58. Human eye forms the real image of the object on the ………. of the eye.
a. Cornea
b. Retina
c. Pupil
d. Iris
59. ………. lens is used for correcting myopia.
a. Convex
b. Concave
c. Either a or b
d. Neither a nor b
60. In ………. the person cannot see near object clearly.
a. Myopia
b. Astigmatism
c. Hyper-metropia
d. None of the given
61. ……………consists of short focal length.
a. Convex lens
b. Concave lens
c. Both a and b
d. Neither a nor b
62. The positive and negative labels and sign for the electric charges were chosen arbitrarily by …………
a. Theodore Roosevelt
b. Benjamin Franklin
c. George Washington
d. Abraham Lincoln
63. ……….. is the best conductor of electricity.
a. Copper
b. Bronze
c. Iron
d. Silver
64. The force of attraction or the force of repulsion acting between the two point charges is proportional to the product of the magnitudes of the two charges and inversely proportional to the square of the distance between them. It is called ………..
a. Bernoulli’s Theorem
b. Ohm’s Law
c. Coulomb’s Law
d. Stefan’s Law
65. …………… is used to measure the exact potential difference between two points of an electric circuit or to measure the electromagnetic force of a cell.
a. Odometer
b. Galvanometer
c. Hygrometer
d. Potentiometer
66. Current is a ………… quantity.
a. scalar
b. vector
c. Either a or b
d. Neither a nor b
67. ………… states that the physical conditions (temperature, mechanical strain etc.) remaining unchanged , the current flowing though the conductor is always directly proportional to the potential difference.
a. Bernoulli’s Theorem
b. Ohm’s Law
c. Coulomb’s Law
d. Stefan’s Law
68. …………. is a device used to detect and measure electric current on a circuit.
a. Odometer
b. Galvanometer
c. Hygrometer
d. Potentiometer
69. …………is a device which converts low voltage AC into high voltage AC and high voltage AC into low voltage AC.
a. Transformer
b. A.C. Dynamo
c. Fuse
d. Inverter
70. As temperature increases , the magnetic property of the ferromagnetic substance ……….
a. decreases
b. increases
c. Either a or b
d. Remains constant
71. ……….. were discovered by Roentgen.
a. X-Rays
b. Anode Rays
c. Cathode Rays
d. Alpha Rays
72. Henry Becquerrel, Madam Curie and Pierre Curie discovered the phenomenon of …………..in 1896.
a. Resistance
b. Radioactivity
c. Surface Friction
d. Relativity
73. . …………….. is used to measure the age of fossils and plants.
a. Radioactive Carbon-14
b. Ore of Uranium
c. Radium
d. Radon
74. …………… is based on nuclear fusion and it is more destructive than an atom bomb.
a. Atom Bomb
b. Hydrogen Bomb
c. Nuclear Fission
d. Nuclear Fusion
75. E = mc2 is the formula of …………
a. Resistance
b. Radioactivity
c. Surface Friction
d. Relativity
76. Air Bubble rises up is water because of up thurst and its potential energy …………..
a. Increases
b. Decreases
c. Remain constant
d. Either a or b
77. When the energy of the satellite is ……… , it moves in either in a circular or an elliptical orbit.
a. negative
b. positive
c. neutral
d. None of the given
78. Norio Taniguchi defined the term ……………
a. Conduction
b. Electromagnetic Induction
c. Electromagnetic Flux
d. Nanotechnology
79. What is the SI Unit of the Weight ?
a. Newton
b. Kilogram
c. Both a and b
d. Neither a nor b
80. What is the SI Unit of the Resistance ?
a. Joule
b. Volte
c. Ohm
d. Mho
81. What is the SI Unit of the Intensity of Sound ?
a. Gauss
b. Coulomb
c. Orsted
d. Decibel
82. Who has presented the Principles of Lever ?
a. Archimedes
b. Kelvin
c. Ampere
d. Fathom
83. What is the SI Unit of the Depth of Sea ?
a. Dioptre
b. Kelvin
c. Ampere
d. Fathom
84. Who has presented the Theory of Atom ?
a. Dalton
b. Faraday
c. Kelvin
d. Diotre
85. …………. converts mechanical energy into electrical energy.
a. Dynamo
b. Electroscope
c. Endoscope
d. Galvanometer
86. ………measures the electric current of low magnitude.
a. Dynamo
b. Electroscope
c. Endoscope
d. Galvanometer
87. ……….. is used for detecting the direction and range of an approaching plane by means of radio microwaves.
a. Radar
b. Periscope
c. Photometer
d. Phonograph
88. ………..measures blood pressure.
a. Stethoscope
b. Sphygmomanometer
c. Tachometer
d. Telescope
89. Who invented Atomic Bomb ?
a. Pascal
b. Orville & Wilbur Wright
c. Carrier
d. J. Robert Oppenheimer
90. Who invented Barometer ?
a. John J. Loud
b. Evangelista Torricelli
c. Alessandro Volta
d. Kirkpatrick Macmillan
91. Who invented Camera ?
a. John Boyd Dunlop
b. Benjamin Franklin
c. Tennant
d. Walker Eastman
92. Who invented Car (Petrol) ?
a. Karl Benz
b. Sony
c. Joseph Aspdin
d. Nicolas and Jean Lumiere
93. Who invented computer ?
a. Christian Huygens
b. RCA
c. Sinclair
d. Rudolf Diesel
94. Who invented diesel engine ?
a. Rudolf Diesel
b. Hypolite Pixii
c. Thomas Alva Edison
d. Zenobe Gramme
95. Who invented Electron ?
a. J. Thompson
b. Henry W. Seeley
c. Alva J. Fisher
d. William Sturgeon
96. Who invented Gramophone ?
a. Louis Prince
b. J.Engl, J Mussolle & H Vogt
c. Andre-Marie Ampere
d. Thomas Alva Edison
97. Who invented Helicopter ?
a. Sir Frank Whittle
b. Edward Teller
c. Etienne Oehmichen
d. Theodore Maiman
98. Who invented Microphone ?
a. Fritz Pfleumer
b. Alexander Grahm Bell
c. Z. Janssen
d. Percy LeBaron Spencer
99. Who invented Neutron Bomb?
a. Georges Claude
b. Samuel Cohen
c. Narinder Kapany
d. Zoll
100. Who invented Pistol/Revolver?
a. J.N. Niepce
b. Cristofori
c. Colt
d. A.H. Taylor & Leo C. Young