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Physics Online Mock Test
1. A passenger standing in a bus is thrown outward when the bus takes a sudden turn
Inertia of motion- Inertia of motion
2. Clear nights are colder than cloudy nights because of
radiation- radiation
Radioactivity- Radioactivity
4. Coolis tube is used to produce
X-rays- X-rays
5. he dimension of which of the following is the same as that of impulse?
Momentum- Momentum
6. When a barometer reading sud denly recedes, it indicates that climate-
will be extremely stormy- will be extremely stormy
7. If the velocity-time graph of a particle is represented by y = mt + c, then the particle is mov ing with
constant acceleration- constant acceleration
8. Which of the following is used for regulated electric supply?
Zener diode- Zener diode
9. If the length of a simple pendu lum is halved then its period of oscillation is
decreased by a factor 2- decreased by a factor 2
10. The snow on the mountains does| NOT melt all at once when it is heated by the sun because:
it reflects most of the heat- it reflects most of the heat
11. Which among the following types of coal produces most heat per unit?
Anthracite- Anthracite
12. In the atmosphere ultraviol rays are absorbed by
Oxygen- Oxygen
13. Which of the following occurred first?
Guglielmo Marconi sent out the first wireless signals- Guglielmo Marconi sent out the first wireless signals
14. Good conductor of electricity is
graphite- graphite
15. Electron microscope was in- vented by
Knoll and Ruska- Knoll and Ruska
16. What is the wavelength of visible spectrum?
3900A''-7600 A。- 3900A''-7600 A。
17. When a vehicle passes, TV re ception gets distorted
spark plug creates electro magnetic disturbances- spark plug creates electro magnetic disturbances
18. A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower Which of the following paths will be traversed by the particle?
Parabolic- Parabolic
19. Heat from the Sun reaches the Earth by
Radiation- Radiation
20. Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is sur- rounded by
Ozone- Ozone
21. Which of the following parts of the sunlight makes the solar cooker hot?
Infra red- Infra red
22. Rain drops fall from great height
hey fall with that ultimate velocity, which are different for different droplets velocity- hey fall with that ultimate velocity, which are different for different droplets velocity
23. Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mm/s
1.0- 1.0
24. Who measured the velocity of light first?
Romer- Romer
25. Speed of sound is the greatest in:
Glass- Glass
26. An ice block with a piece of lead embeded in it floats in water
Falls- Falls
27. Which one of the following is used for sun glasses?
Crooks glass- Crooks glass
28. The speed of light with the rise in the temperature of the me- dium
Remains unaltered- Remains unaltered
29. Which set of conditions repre- sents the easiest way to liquify a gas?
Low temperature and high pressure- Low temperature and high pressure
30. Wollen clothes keep the body warm because
Wool is a bad conductor- Wool is a bad conductor
31. Clothes keep us warm in win- ter because they:
prevent the heat of the body from escaping- prevent the heat of the body from escaping
32. When heated from 00 to 100c volume of a given mass of water will:
Decrease and then will increase- Decrease and then will increase
33. When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room
diffusion- diffusion
34. Which of the following state- ments is true when we see 'rain- bow?
The Sun remains behind us and we face raindrops- The Sun remains behind us and we face raindrops
35. Which of the following metals is used for the manufacture of heating elements provided in electric iron?
Nichrome- Nichrome
36. Which among the following is the fundamental quantity?
Time- Time
gene mutation- gene mutation
38. The velocity of sound in moist air is more than in dry air be- cause the moist air has
less density than dry air.- less density than dry air.
39. Forabody moving with non-uniform velocity and uniform acceleration
Displacement-Time graph is non-linear- Displacement-Time graph is non-linear
40. Holography is a technique of
recording a permanent three dimensional photograph of a given single colour or a multicolour- recording a permanent three dimensional photograph of a given single colour or a multicolour
41. When the barometer reading dips suddenly, it is an indica- tion of
Storm- Storm
water vapour at low tem perature- water vapour at low tem perature
43. Which among the following waves is used for communica- tion by artificial satellites?
Micro waves- Micro waves
44. Which combination of colour i the most convenient during day and night time?
Red and green- Red and green
45. Energy is continuously created in the sun due to:
nuclear fusion- nuclear fusion
46. Tungsten is used for the manufacture of the filament of an eledtric bulb, because
It has a very high melting point- It has a very high melting point
47. Why the needle of iron swims on water surface when it is kept gently?
due to surface tension- due to surface tension
48. For which Diode is used?
purification- purification
49. The sky appears blue because
Scattering of light- Scattering of light
50. In a refrigerator what produces the cooling ?
None of these- None of these
51. What principle/law explains the working of the hydraulic brakes in automobiles?
Pascal's law- Pascal's law
52. In electronics what comes un der tank circuit?
Capacity and inductane- Capacity and inductane
53. A boat will submerge when it displaces water equal to its own:
weight- weight
54. The instrument which uses sound waves to measure the depth of oceans is
Sonar- Sonar
55. An electron microscope gives higher magnification than an op- tical microscope, because
the wavelength of electrons is smaller as compared to the wavelength of visible light- the wavelength of electrons is smaller as compared to the wavelength of visible light
56. Which of the following is a non- renewable source of energy?
Coal- Coal
57. Solar energy is converted into chemical energy during
Photosynthesis- Photosynthesis
58. Plants are dried up in winter due to frost because
There is mechanical loss of tissues and drought condi tion prevails- There is mechanical loss of tissues and drought condi tion prevails
59. The velocity of heat radiation in vacuum is
Equal to that of light- Equal to that of light
60. The different colours of differ ent stars are due to the varia- tion of
temperature- temperature
61. The shape of our milky way gal axy is
spiral- spiral
62. A person standing on a railway platform listens to the whistles of arriving and departing trains
of higher pitch when train arrives- of higher pitch when train arrives
63. Where are mesons found?
Cosmic rays- Cosmic rays
64. The source of the Sun's energy is the process of
Nuclear fission- Nuclear fission
65. A gas thermometer is more sen- sitive than a liquid thermometer because a gas
does not change state easily- does not change state easily
66. The energy emitted by the Su is due to
Nuclear fusion- Nuclear fusion
67. On which of the following tech- niques photostate machine works?
Electrostatic Image-Making- Electrostatic Image-Making
68. The instrument that measures and records the relative humid- ity of air is
Hygrometer- Hygrometer
69. Surface tension in a liquid is due to
Cohesive force between- Cohesive force between
70. If the diameter of a capillary is doubled, then the rise of water in it will be
half- half
71. Instrument used to measure the force and velocity of the wind is
Anemometer- Anemometer
72. The best conductor of heat among the following is
mercury- mercury
73. The term 'equinox' means
When the day and night are takes around the Surn which it rotates of equal duration- When the day and night are takes around the Surn which it rotates of equal duration
74. While catching a ball, a player pulls down his hands to lower the-
momentum- momentum
75. The fundamental scientific prin- ciple in the operation of battery is
dissociation of electrolytes- dissociation of electrolytes
76. Longitudinal waves cannot travel through
Vacuum- Vacuum
77. What is colour of light related to?
Amplitude- Amplitude
78. What is the minimum escape velocity of rocket to be launched into space?
11 Km/Sec.- 11 Km/Sec.
79. The mass of a star is two times the mass of the Sun
Neutron Star- Neutron Star
80. Optic fibres are used in:
Endoscopy- Endoscopy
81. When pressure is increased the melting point of ice
decreases- decreases
82. The plastic material commonly used for making gear wheels is
Nylons- Nylons
83. The hydraulic brakes used in au tomobiles is a direct application of:
Pascal's law- Pascal's law
84. In which of the following cases, kinetic energy is being used in performing work?
Driving a car to cover a dis- tance- Driving a car to cover a dis- tance
85. Why are we able to hear short wave broadcasts better than long wave, broadcasts?
Short waves are more ener getic than long waves.- Short waves are more ener getic than long waves.
86. Dynamo is a device for converting
Mechanical energy into electrical energy- Mechanical energy into electrical energy
87. When a ring of metal is heated what happens to its hole?
expands- expands
88. Electrostatic precipitator is used to control the pollution of
air- air
89. What is viewed through an electron microscope?
Structure of bacteria and viruses- Structure of bacteria and viruses
90. Oil rises up the wick in a lamp because
Of the capillary action phenomenon- Of the capillary action phenomenon
91. When the speed of car is dou- bled, then what will be the brak ing force of the car to stop it in the same distance?
four times- four times
92. Who among the following devel oped the technology of under ground nuclear explosion?
Dr. Homi J. Bhabha- Dr. Homi J. Bhabha
93. Which of the following is used in oven?
Microwaves- Microwaves
94. The substance which conducts current in the solid state is
graphite- graphite
95. The splitting of different colours of light in a prism is:
Disperson of light- Disperson of light
96. A circular plate, a cube and a sphere, all made up of same material and having the same mass, are heated to 300°C and left in a room
Sphere- Sphere
97. What apparatus is used to locate a submerged object?
Sonar- Sonar
98. What is found in frequency mod- ulation?
Fixed frequency- Fixed frequency
99. How much calorie of energy is released by a boiled egg?
77- 77
100. One Kilowatt hour is equal to-
3.6 Mega Joule- 3.6 Mega Joule
Physics Free Online Test
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