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MCQOPTIONS
This section includes 1341 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by |
| A. | Decreasing the radius of the capillary tube |
| B. | Increasing the radius of the capillary tube |
| C. | Increasing the height of water in the vessel |
| D. | None of these |
| Answer» B. Increasing the radius of the capillary tube | |
| 52. |
Earlist thermometerr was developed by |
| A. | Celsius |
| B. | Fahrenheit |
| C. | Kelvin |
| D. | Galileo |
| Answer» E. | |
| 53. |
What is the maximum velocity with which a body of mass 'm' must enter a vertical loop of radius 'R'so that it can complete the loop ? |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 54. |
Heat is associated with |
| A. | K.e of random motion of molecules |
| B. | K.e of orderly motion of molecules |
| C. | Total k.e of random and orderly motion of molecules |
| D. | None of these |
| Answer» B. K.e of orderly motion of molecules | |
| 55. |
Pick out the only vector quantity |
| A. | Pressure |
| B. | Impulse |
| C. | Gravitational potential |
| D. | Co-efficient of friction |
| Answer» C. Gravitational potential | |
| 56. |
Which of the following is a vector quantity |
| A. | Momentum |
| B. | Pressure |
| C. | Energy |
| D. | Work |
| Answer» B. Pressure | |
| 57. |
Two bodies A and B are of same mass and same amount of heat is given to both of them. If the temperature of A increases more than that of B because of heat addition, then |
| A. | The specific heat capacity of a is more than that of b |
| B. | The specific heat capacity of a is less than that of b |
| C. | Both a and b have the same specific heat capacity but a has greater thermal conductivity |
| D. | Both a and b the same specific heat capacity but b has greater thermal conductivity |
| Answer» C. Both a and b have the same specific heat capacity but a has greater thermal conductivity | |
| 58. |
At what temperature do the Fahrenheit and celcius scales give the same reading? |
| A. | 212 degrees |
| B. | 32 degreees |
| C. | -40 degreees |
| D. | 0 degreees |
| Answer» D. 0 degreees | |
| 59. |
The Hydraulic Break works on the principle of _____ ? |
| A. | Pascal's law |
| B. | Boyle's law |
| C. | Coulomb's law |
| D. | Bernouli's law |
| Answer» B. Boyle's law | |
| 60. |
When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs in the loudness of tone. This phenomenon is known as |
| A. | Doppler effect |
| B. | Beats |
| C. | Resonance |
| D. | Echo |
| Answer» C. Resonance | |
| 61. |
A nuclear reactor is said to have become 'critical' when |
| A. | It stops due to malfunctioning |
| B. | It starts emitting dangerous radioactive radiations |
| C. | It is shut down to avoid explosion |
| D. | It is ready to produce controlled energy |
| Answer» E. | |
| 62. |
What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space? |
| A. | 18 km/sec |
| B. | 11.2 km/sec |
| C. | 21 km/sec |
| D. | 35 km/sec |
| Answer» C. 21 km/sec | |
| 63. |
The fact that two large ships travelling on close parallel courses in the same direction tend to move towards each other can be explained by |
| A. | Bernoulli's principle |
| B. | Magnetic properties of the ship's material |
| C. | Newton's third law of motion |
| D. | Earth's gravitational force |
| Answer» B. Magnetic properties of the ship's material | |
| 64. |
Lightning is produced when |
| A. | Similar charges of electricity rush towards each other and then get repelled |
| B. | Clouds strike against impurities in air and the friction burns up these impurities |
| C. | Strong opposite charges in different clouds break down the resistance offered by the intervening air |
| D. | Water vapour produces electricity in the clouds |
| Answer» D. Water vapour produces electricity in the clouds | |
| 65. |
Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water |
| A. | Increases to a great extent |
| B. | Increases slightly |
| C. | Decreases slightly |
| D. | Decreases rapidly |
| Answer» D. Decreases rapidly | |
| 66. |
A boy is swinging a ball attached to a string in a horizotal circle. If the string snaps |
| A. | The ball will travel towards the center of the circle and fall down |
| B. | It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down |
| C. | It will fall down at the same place where the string breaks |
| D. | None of these |
| Answer» C. It will fall down at the same place where the string breaks | |
| 67. |
"Light years" is the unit of _____? |
| A. | Acceleration |
| B. | Distance |
| C. | Light intensity |
| D. | Weight |
| Answer» C. Light intensity | |
| 68. |
What is unit of Astronomical distance ? |
| A. | Light year |
| B. | Angstrom |
| C. | Weber |
| D. | Lux |
| Answer» B. Angstrom | |
| 69. |
The velocity required to place a vehicle in orbit round the moon is _______ that required to place it in orbit round the earth |
| A. | Less than |
| B. | Greater than |
| C. | Equal to |
| D. | Greater than or equal to |
| Answer» B. Greater than | |
| 70. |
An integrated circuit is more advantages than a coventional circuit because |
| A. | They make the electric equipments more reliable and easier for servicing |
| B. | A faulty part of a conventional circuit may be difficult to locate and repair |
| C. | If a part of the integrated circuit fails the entire circuit is simply replaced |
| D. | All the above |
| Answer» E. | |
| 71. |
During thunderstorm you are travelling in a car. To protect yourself from the lightning you will have to |
| A. | Remain in the car |
| B. | Get out of the car and lie flat in the ground |
| C. | Abandon the car and take shelter under a nearby tree |
| D. | Touch the nearest electric pole |
| Answer» B. Get out of the car and lie flat in the ground | |
| 72. |
Radian is used to measure |
| A. | Temperature |
| B. | Intensity of flame |
| C. | Angle |
| D. | Solid angle |
| Answer» D. Solid angle | |
| 73. |
Lightning heats the surrounding air to |
| A. | 300 deg cent |
| B. | 3000 deg cent |
| C. | 30000 deg cent |
| D. | 300000 deg cent |
| Answer» D. 300000 deg cent | |
| 74. |
Mirage is an example of |
| A. | Reflection of light & refraction of light |
| B. | Dispersion of light |
| C. | Total internal reflection |
| D. | Refraction of light & total internal reflection of light |
| Answer» E. | |
| 75. |
A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat? |
| A. | Conduction and convection only |
| B. | Conduction and radiation only |
| C. | Convection and radiation only |
| D. | Conduction, convection and radiation |
| Answer» E. | |
| 76. |
A balloon filled with hydrogen will |
| A. | Continue going upwards uninterrupted |
| B. | Reach a particular height and remain floating |
| C. | Burst after reaching some height |
| D. | Reach a particular height and start coming down |
| Answer» C. Burst after reaching some height | |
| 77. |
Which of the following properties is found only in ferromagnetic materials ? |
| A. | Susceptibility independent of temperature |
| B. | Point in a particular direction |
| C. | Hysteresis |
| D. | Attracting a magnetic substance |
| Answer» D. Attracting a magnetic substance | |
| 78. |
A boy is swinging a ball attached to a string in a horizontal circle.If the string snaps |
| A. | The ball will travel towards the center of the circle and fall down |
| B. | It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down |
| C. | It will fall down at the same place where the string breaks |
| D. | None of these |
| Answer» C. It will fall down at the same place where the string breaks | |
| 79. |
1 Joule is Equal to |
| A. | 10^3 ergs |
| B. | 10^6 ergs |
| C. | 10^7 ergs |
| D. | 10^5 ergs |
| Answer» D. 10^5 ergs | |
| 80. |
Compressions and Rarefactions are characteristic of |
| A. | Longitudinal waves |
| B. | Transverse waves |
| C. | Both a & b |
| D. | Neither of a & b |
| Answer» B. Transverse waves | |
| 81. |
Fog is an example of a |
| A. | Liquid dispersed in gas |
| B. | Solid dispersed in liquid |
| C. | Liquid dispersed in solid |
| D. | Gas dispersed in liquid |
| Answer» B. Solid dispersed in liquid | |
| 82. |
"The Law of Kepler" is related with which among the following ? |
| A. | Planetary motion |
| B. | Law of conservation of energy |
| C. | Law of gravitation |
| D. | None |
| Answer» B. Law of conservation of energy | |
| 83. |
Electrical Pressure is also called |
| A. | Current |
| B. | Voltage |
| C. | Resistance |
| D. | Power |
| Answer» C. Resistance | |
| 84. |
The Capacity of a Communication Channel is Measured in |
| A. | Band rate |
| B. | Band width |
| C. | Data flow |
| D. | Bit capacity |
| Answer» C. Data flow | |
| 85. |
Gas law was given by |
| A. | Boyle |
| B. | Ostwald |
| C. | Faraday |
| D. | Arrhenius |
| Answer» B. Ostwald | |
| 86. |
Which of following in not a property of cathode ray |
| A. | These rays can ionise gases |
| B. | These rays can penetrate through thin metal foils |
| C. | These rays make materials cool on which they fall |
| D. | Cathode rays are invisible and travel in a straight line |
| Answer» D. Cathode rays are invisible and travel in a straight line | |
| 87. |
Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum |
| A. | 1.8 km, 0.15 km |
| B. | 2.2 km, 0.20 km |
| C. | 2.8 km, 0.25 km |
| D. | 3.3 km, 0.30 km |
| Answer» E. | |
| 88. |
An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at p |
| A. | 1200 m |
| B. | 0.33 km |
| C. | 3.33 km |
| D. | 33 km |
| Answer» D. 33 km | |
| 89. |
The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called |
| A. | Fast breeding |
| B. | Nuclear fusion |
| C. | Nuclear fission |
| D. | Nuclear reaction |
| Answer» D. Nuclear reaction | |
| 90. |
Which are the primary Colours ? |
| A. | Red, green, blue |
| B. | Red, green, white |
| C. | Yellow, green, blue |
| D. | Red, magenta, blue |
| Answer» B. Red, green, white | |
| 91. |
Which among the following order of decreasing wavelengths of electromagnetic waves is correct? I. Radio waves II. Infrared rays III. Visible Light IV. X-Rays |
| A. | I, ii, iii, iv |
| B. | I, iii, ii, iv |
| C. | Ii, i, iv, iii |
| D. | Iv, iii, ii, i |
| Answer» B. I, iii, ii, iv | |
| 92. |
Fire in the diesel engine is produces by which of the following?. |
| A. | Friction |
| B. | Spark plug |
| C. | Self starter |
| D. | Compression |
| Answer» E. | |
| 93. |
Growth of the baby in the uterus is found using______. |
| A. | X-rays |
| B. | Ultra sound |
| C. | Gamma rays |
| D. | Ultra violet rays |
| Answer» C. Gamma rays | |
| 94. |
Persistence of vision is the principle behind? |
| A. | Cinema |
| B. | Camera |
| C. | Periscope |
| D. | Spectroscope |
| Answer» B. Camera | |
| 95. |
Which metal is commonly used for making an electromagnet? |
| A. | Iron |
| B. | Nickel |
| C. | Cobalt |
| D. | Copper |
| Answer» B. Nickel | |
| 96. |
An air bubble in water will act like a |
| A. | Convex lens |
| B. | Convex mirror |
| C. | Concave lens |
| D. | Concave mirror |
| Answer» D. Concave mirror | |
| 97. |
The rate of change of linear momentum of a body falling freely under gravity is equal to it's ____ ? |
| A. | Kinetic energy |
| B. | Weight |
| C. | Potential energy |
| D. | Impulse |
| Answer» C. Potential energy | |
| 98. |
In very cold countries alcohol is used as a thermometric liquid because |
| A. | Alcohol is a poor conductor of heat |
| B. | Alcohol can be coloured for its level to be seen easily |
| C. | Its freezing point is very low |
| D. | It will not stick to the glass tube |
| Answer» D. It will not stick to the glass tube | |
| 99. |
The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because |
| A. | The ringing is not loud enough |
| B. | The glass of the bell jar absorbs the sound waves |
| C. | The bell jar is too small |
| D. | There is no air or any other gas in the bell jar |
| Answer» E. | |
| 100. |
In a freezer ice cubes will be formed more quickly in trays made of |
| A. | Rubber |
| B. | Plastic |
| C. | Aluminium |
| D. | Wood |
| Answer» D. Wood | |