1. The filament of an electric bulb is made of which metal? -Tungsten
2. The hydraulic brake used in automobiles is a direct application of_______? -Pascal's Law
3. Where the value of 'g' (acceleration due to gravity) is maximum? -At poles
4. Good conductors have many loosely bound ______? -Electrons
5. If the body is hollow, then its centre of gravity lies? -Outside the material
6. A man with a dark skin, in comparison with a man with a white skin, experiences__?
-Less heat, Less cold
7. What is the escape velocity for all objects from the earth? -11.16 km/sec
8. If the temperature inside a room is increased, the relative humidity will? -Decrease
9. If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? -6
10. Light travels in a________? -Straight line
11. What converts the alternating current into direct current? -Rectifier
12. Einstein got noble prize for_______? -Photoelectric Effect
13. The nucleus of an atom consists of_______? -Neutrons and protons
14. What is the measuring unit of length of light waves? -Angstrom
15. How much is one barrel of oil approximately equal to? -159 litres
16. The sky appears black from the moon because of___? -Lack of Atmosphere
17. The specific resistance of a wire varies with its______? -Material
18. Which instrument is used to measure depth of ocean? -Fathometer
19. The unidirectional property of a one-junction is useful for its use as which thing? -Rectifier
20. The strongest force in the nature is _______? -Nuclear Force
21. Which is the only natural magnet? -Magnetite
22. We cannot see during a fog, because of _______. -Scattering of light
23. In which medium sound travels faster? -Solid
24. A fast wind can turn the blades of a windmill because it possesses______. -Potential Energy
25. Which of the following material is used for electric wire heater? -Nichrome
26. Conversion of chemical energy into electrical energy occurs in which thing? -Battery
27. The direction of a magnetic field within a magnet is_______? -From South to north
28. What remains constant while throwing a ball upward? -Acceleration
29. What type of lens is a magnifying glass? -Convex lens
30. Why does a liquid drop tend to assume a spherical shape? -To minimize surface tension
31. What happens when soda water bottle falls freely? -No bubbles form
32. Pure water freezes at what temperature? -32 F
33. Why are Metals good conductor of heat than insulator? -They contain free electrons
34. When some detergent is added to water, the surface tension_______? -Decreases
35. The value of which quantity remains same in all system of units? -Specific Gravity
36. Distance of stars are measured in_______? -Light Years
37. Nature of sound wave is ________? -Longitudinal 38. Which is used to initiate fissions? -Neutrons
39. The total internal reflection can occur when light pass from________. -Denser to Rarer medium
40. Who discovered Diode Bulb ? -Sir J. S. Fleming
41. Radio waves of constant amplitude can be generated with______? -Oscillator
42. What is the SI unit of luminous intensity? -Candela
43. In summer, the mirages are seen due to the phenomenon of ______? -Total Internal Reflection
44. Who gave the first experimental value of G? -Cavendish
45. Astigmatism can be corrected by______? -Cylindrical lenses
46. What apparatus is used to locate a submerged object? -SONAR
47. The image formed by convex lens in a simple microscope is______. -Virtual & Erect
48. What is the unit of magnetic flux? -Maxwell
49. Coolis tube is used to produce_______? -X-Rays
50. Sudden fall in barometer is indication of______? -Storm
51. Force of attraction between the molecules of different substances is called_______?
-Adhesive Force
52. What is the working principle of Washing machine? -Centrifugation
53. Insects can move on the surface of water without sinking due to________.-Surface tension of water
54. The temperature of the sun is measured with _______. -Pyrometer
55. Acceleration acts always in the direction______? -Of the net force
56. Which instrument is used to measure altitudes in aircrafts? -Altimeter
57. What is the name of short duration wave? -Pulse
58. The absorption of ink by blotting paper involves______? -Capillary Action
59. Two drops of a liquid are merged to from a single drop. In this process ________?
-Energy is released
60. Which is more elastic - Steel or Rubber? -Steel
61. An atom bomb is based on the principle of_________? -Nuclear Fission
62. Which instrument is used to measure the scattering of light by particles suspended in a liquid?
-Nephetometer
63. The speed of light with the rise in the temperature of the medium _______? –Remains unaltered
64. Most commercial nuclear power plants worldwide are cooled by ______? –Water
65. Electric Motor converts_______? –Electric energy to mechanical energy
66. Nuclear sizes are expressed in a unit named__________? –Fermi
67. Weightlessness experienced in a spaceship is due to_______? –Absence of Gravity
68. The blue colour of the clear sky is due to ________? –Dispersion of Light
69. What does airbag, used for safety of car driver, contain? –Sodium Azide
70. Radian is used to measure________? –Angle
71. Who had showed that the electric and magnetic waves are equal in vacuum?
–James Clerk Maxwell
72. When a red glass is heated in dark room it will seem______. –Green
73. The friction force exerted by fluids is called ______. –Drag
74. Which is used in designing ships and submarines? –Archimedes Principle
75. Which instrument is used to measure change in volume of substances? –Dilatometer
76. On which principle, transformer works? –Mutual Induction
77. Potential energy of your body is minimum when you _______. –Lie down on ground
78. The velocity of sound in air________? –332m/sec
79. Beats occur because of _______? –Interference
80. Who firstly demonstrated experimentally the existence of electromagnetic wave? –Hertz
81. The working of the quartz crystal in the watch is based on which effect? –Piezoelectric Effect
82. What is te the unit of Radioactivity? –Curie
83. What is the wavelength of visible spectrum? –390-700 nanometres
84. One astronomical unit is the average distance between_______? –Earth & Sun
85. Camberts Law is related to_______? –Interference
86. Which waves are used in sonography? –Ultrasonic waves
87. Which instrument is used to measure the power of electric circuit? –Wattmeter
88. Splitting of Uranium nucleus releases_____ energy. –Nuclear
89. kilowatt hour is the unit of_______? –Energy
90. A simple device that is used to either break or complete the electric circuit, is called _____?–Switch
91. Number of basic S.I. units is ___. –Seven (7)
92. What is the name of the scientist who stated that matter can be converted into energy? –Einstein
93. The size of atomic nucleus is of the order of___? –10^-14 m
94. A temperature at which both the Fahrenheit and the centigrade scales have the same value? –40°
95. In the visible spectrum which colour has the shortest wavelength? –Violet
96. What is the unit of specific resistance? –Ohm-metre
97. What do we use as a moderator in nuclear reactor? –Graphite
98. The mirror used in motor vehicles near the driver's seat is a_______? –Convex Mirror
99. Electron microscope was invented by_______? –Robert Koch
100. Indian Physicist and Nobel Laureate in 1930 for his research in the field of Light Scattering?
–C.V. Raman
✴️✴️✴️✴️✴️✴️✴️✴️✴️✴️
2. The hydraulic brake used in automobiles is a direct application of_______? -Pascal's Law
3. Where the value of 'g' (acceleration due to gravity) is maximum? -At poles
4. Good conductors have many loosely bound ______? -Electrons
5. If the body is hollow, then its centre of gravity lies? -Outside the material
6. A man with a dark skin, in comparison with a man with a white skin, experiences__?
-Less heat, Less cold
7. What is the escape velocity for all objects from the earth? -11.16 km/sec
8. If the temperature inside a room is increased, the relative humidity will? -Decrease
9. If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? -6
10. Light travels in a________? -Straight line
11. What converts the alternating current into direct current? -Rectifier
12. Einstein got noble prize for_______? -Photoelectric Effect
13. The nucleus of an atom consists of_______? -Neutrons and protons
14. What is the measuring unit of length of light waves? -Angstrom
15. How much is one barrel of oil approximately equal to? -159 litres
16. The sky appears black from the moon because of___? -Lack of Atmosphere
17. The specific resistance of a wire varies with its______? -Material
18. Which instrument is used to measure depth of ocean? -Fathometer
19. The unidirectional property of a one-junction is useful for its use as which thing? -Rectifier
20. The strongest force in the nature is _______? -Nuclear Force
21. Which is the only natural magnet? -Magnetite
22. We cannot see during a fog, because of _______. -Scattering of light
23. In which medium sound travels faster? -Solid
24. A fast wind can turn the blades of a windmill because it possesses______. -Potential Energy
25. Which of the following material is used for electric wire heater? -Nichrome
26. Conversion of chemical energy into electrical energy occurs in which thing? -Battery
27. The direction of a magnetic field within a magnet is_______? -From South to north
28. What remains constant while throwing a ball upward? -Acceleration
29. What type of lens is a magnifying glass? -Convex lens
30. Why does a liquid drop tend to assume a spherical shape? -To minimize surface tension
31. What happens when soda water bottle falls freely? -No bubbles form
32. Pure water freezes at what temperature? -32 F
33. Why are Metals good conductor of heat than insulator? -They contain free electrons
34. When some detergent is added to water, the surface tension_______? -Decreases
35. The value of which quantity remains same in all system of units? -Specific Gravity
36. Distance of stars are measured in_______? -Light Years
37. Nature of sound wave is ________? -Longitudinal 38. Which is used to initiate fissions? -Neutrons
39. The total internal reflection can occur when light pass from________. -Denser to Rarer medium
40. Who discovered Diode Bulb ? -Sir J. S. Fleming
41. Radio waves of constant amplitude can be generated with______? -Oscillator
42. What is the SI unit of luminous intensity? -Candela
43. In summer, the mirages are seen due to the phenomenon of ______? -Total Internal Reflection
44. Who gave the first experimental value of G? -Cavendish
45. Astigmatism can be corrected by______? -Cylindrical lenses
46. What apparatus is used to locate a submerged object? -SONAR
47. The image formed by convex lens in a simple microscope is______. -Virtual & Erect
48. What is the unit of magnetic flux? -Maxwell
49. Coolis tube is used to produce_______? -X-Rays
50. Sudden fall in barometer is indication of______? -Storm
51. Force of attraction between the molecules of different substances is called_______?
-Adhesive Force
52. What is the working principle of Washing machine? -Centrifugation
53. Insects can move on the surface of water without sinking due to________.-Surface tension of water
54. The temperature of the sun is measured with _______. -Pyrometer
55. Acceleration acts always in the direction______? -Of the net force
56. Which instrument is used to measure altitudes in aircrafts? -Altimeter
57. What is the name of short duration wave? -Pulse
58. The absorption of ink by blotting paper involves______? -Capillary Action
59. Two drops of a liquid are merged to from a single drop. In this process ________?
-Energy is released
60. Which is more elastic - Steel or Rubber? -Steel
61. An atom bomb is based on the principle of_________? -Nuclear Fission
62. Which instrument is used to measure the scattering of light by particles suspended in a liquid?
-Nephetometer
63. The speed of light with the rise in the temperature of the medium _______? –Remains unaltered
64. Most commercial nuclear power plants worldwide are cooled by ______? –Water
65. Electric Motor converts_______? –Electric energy to mechanical energy
66. Nuclear sizes are expressed in a unit named__________? –Fermi
67. Weightlessness experienced in a spaceship is due to_______? –Absence of Gravity
68. The blue colour of the clear sky is due to ________? –Dispersion of Light
69. What does airbag, used for safety of car driver, contain? –Sodium Azide
70. Radian is used to measure________? –Angle
71. Who had showed that the electric and magnetic waves are equal in vacuum?
–James Clerk Maxwell
72. When a red glass is heated in dark room it will seem______. –Green
73. The friction force exerted by fluids is called ______. –Drag
74. Which is used in designing ships and submarines? –Archimedes Principle
75. Which instrument is used to measure change in volume of substances? –Dilatometer
76. On which principle, transformer works? –Mutual Induction
77. Potential energy of your body is minimum when you _______. –Lie down on ground
78. The velocity of sound in air________? –332m/sec
79. Beats occur because of _______? –Interference
80. Who firstly demonstrated experimentally the existence of electromagnetic wave? –Hertz
81. The working of the quartz crystal in the watch is based on which effect? –Piezoelectric Effect
82. What is te the unit of Radioactivity? –Curie
83. What is the wavelength of visible spectrum? –390-700 nanometres
84. One astronomical unit is the average distance between_______? –Earth & Sun
85. Camberts Law is related to_______? –Interference
86. Which waves are used in sonography? –Ultrasonic waves
87. Which instrument is used to measure the power of electric circuit? –Wattmeter
88. Splitting of Uranium nucleus releases_____ energy. –Nuclear
89. kilowatt hour is the unit of_______? –Energy
90. A simple device that is used to either break or complete the electric circuit, is called _____?–Switch
91. Number of basic S.I. units is ___. –Seven (7)
92. What is the name of the scientist who stated that matter can be converted into energy? –Einstein
93. The size of atomic nucleus is of the order of___? –10^-14 m
94. A temperature at which both the Fahrenheit and the centigrade scales have the same value? –40°
95. In the visible spectrum which colour has the shortest wavelength? –Violet
96. What is the unit of specific resistance? –Ohm-metre
97. What do we use as a moderator in nuclear reactor? –Graphite
98. The mirror used in motor vehicles near the driver's seat is a_______? –Convex Mirror
99. Electron microscope was invented by_______? –Robert Koch
100. Indian Physicist and Nobel Laureate in 1930 for his research in the field of Light Scattering?
–C.V. Raman
✴️✴️✴️✴️✴️✴️✴️✴️✴️✴️
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