MCQOPTIONS
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MCQOPTIONS
This section includes 281 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
In the relation = + , and are measured in metre (m) and is measured in second (s). The SI unit of must be |
| A. | m |
| B. | ms |
| C. | s |
| D. | ms |
| E. | <sup>-1</sup> |
| Answer» E. <sup>-1</sup> | |
| 152. |
A car goes straight from a point A to a point B with a velocity of 40 km/h and returns back with a velocity of 60 km/h. The average velocity during the whole journey is |
| A. | 0 |
| B. | 48 km/h |
| C. | 50 km/h |
| D. | None of these |
| Answer» B. 48 km/h | |
| 153. |
Light year |
| A. | Time |
| B. | Speed of light |
| C. | Distance |
| D. | Mass |
| Answer» D. Mass | |
| 154. |
The working |
| A. | Centrifugation |
| B. | Dialysis |
| C. | Reverse osmosis |
| D. | Diffusion |
| Answer» B. Dialysis | |
| 155. |
If the earth were to |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | None of these |
| Answer» D. None of these | |
| 156. |
The time period of an |
| A. | The mass of the satellite |
| B. | Radius of the orbit |
| C. | Mass of the earth and radius of the earth |
| D. | None of the above |
| Answer» B. Radius of the orbit | |
| 157. |
A body is just |
| A. | Sink to the bottom |
| B. | Start oscillating |
| C. | Cone back to the same position immediately |
| D. | Come back to the same position slowly |
| Answer» B. Start oscillating | |
| 158. |
Number of basic |
| A. | 4 |
| B. | 7 |
| C. | 6 |
| D. | 5 |
| Answer» C. 6 | |
| 159. |
An application of |
| A. | Dynamic lift of a n aeroplane |
| B. | Viscosity meter |
| C. | Capillary rise |
| D. | Hydraulic press |
| Answer» B. Viscosity meter | |
| 160. |
If the distance between two masses is doubled, the gravitational attraction between them |
| A. | Is doubled |
| B. | Becomes four times |
| C. | Is reduced to half |
| D. | Is reduced to a quarter |
| Answer» E. | |
| 161. |
A piece of ice has a stone in it and floato in a vessel containing water. When the ice melts, the level of water in the vessel would |
| A. | remain unchanged |
| B. | Fall |
| C. | Rise |
| D. | None of these |
| Answer» C. Rise | |
| 162. |
Bernoulli's theorem |
| A. | Flow of liquids |
| B. | Viscousity |
| C. | Surface tension |
| D. | Static fluid pressure |
| Answer» B. Viscousity | |
| 163. |
If the diameter and mass of the earth becomes two times their present values then the weight of an object on the surface of the earth will |
| A. | Become half |
| B. | Become one-fourth |
| C. | Remain unchanged |
| D. | Be doubled |
| Answer» B. Become one-fourth | |
| 164. |
A large tank having a small hole at the bottom is filled with water to a height h. If the stream of water coming out of the hole is directed vertically upward it will |
| A. | Rise to height h |
| B. | Rise to a height less than h |
| C. | Rise to a height greater than h |
| D. | Not rise at all |
| Answer» B. Rise to a height less than h | |
| 165. |
If a stream of air is blown under one of the pans of a physical balance in equilibrium, then the pan will |
| A. | Go up |
| B. | Go down |
| C. | Not be affected |
| D. | None of these |
| Answer» C. Not be affected | |
| 166. |
The mass of a body on earth is 100 kg (acceleration due to gravity, ge=10m/s |
| A. | 100/ 6 kg |
| B. | 60 kg |
| C. | 100 kg |
| D. | 600 kg |
| Answer» D. 600 kg | |
| 167. |
Insects |
| A. | Dynamic lift |
| B. | Viscosity of water |
| C. | Surface tension of water |
| D. | None of these |
| Answer» D. None of these | |
| 168. |
Meniscus of mercury |
| A. | Concave |
| B. | Convex |
| C. | Plane |
| D. | Cylindrical |
| Answer» C. Plane | |
| 169. |
If the radius of the earth shrinked by one percent, its mass remaining the same, the value of g on the earth's surface would |
| A. | Increase by 0.5% |
| B. | Increase by 2% |
| C. | Decrease by 0.5% |
| D. | Decrease by 2% |
| Answer» C. Decrease by 0.5% | |
| 170. |
When there are |
| A. | Surface tension of the liquid |
| B. | Density of the liquid |
| C. | Viscosity of air |
| D. | Temperature of air |
| Answer» B. Density of the liquid | |
| 171. |
Kerosene oil |
| A. | Diffusion of the oil through the wick |
| B. | Surface tension |
| C. | Buoyant force of air |
| D. | The gravitational pull of the wick |
| Answer» C. Buoyant force of air | |
| 172. |
The operating principle of a |
| A. | Pascal's Principle |
| B. | Archimedes' principle |
| C. | Boyle's law |
| D. | Newton's law of gravitation |
| Answer» B. Archimedes' principle | |
| 173. |
Maxwell |
| A. | Intensity of magnetization |
| B. | Permeability |
| C. | Magnetic flux |
| D. | Magnetic susceptibility |
| Answer» D. Magnetic susceptibility | |
| 174. |
Potential |
| A. | Watt |
| B. | Joule |
| C. | <u>Joule</u> |
| D. | Coulomb |
| E. | Newton-second |
| Answer» D. Coulomb | |
| 175. |
unit of solid angle |
| A. | Degree |
| B. | Radian |
| C. | Steradian |
| D. | Radian-second |
| Answer» D. Radian-second | |
| 176. |
Which one of the following groups have quantities that do not have the same dimension? |
| A. | Pressure, Stress |
| B. | Velocity, Speed |
| C. | Force, Impulse |
| D. | Work, Energy |
| Answer» D. Work, Energy | |
| 177. |
Ampere |
| A. | Current electricity |
| B. | Magnetic field |
| C. | Electric charge |
| D. | Resistance |
| Answer» B. Magnetic field | |
| 178. |
Decibel |
| A. | Speed of light |
| B. | Intensity of sound |
| C. | Intensity of heat |
| D. | None of these |
| Answer» C. Intensity of heat | |
| 179. |
Curie |
| A. | Temperature |
| B. | Radio-activity |
| C. | Heat |
| D. | Energy |
| Answer» C. Heat | |
| 180. |
The most suitable unit for expressing |
| A. | Micron |
| B. | Nanometre |
| C. | Fermi |
| D. | Angstrom |
| Answer» D. Angstrom | |
| 181. |
A floating body always displaces liquid equal to its own |
| A. | Mass |
| B. | Volume |
| C. | Weight |
| D. | None of these |
| Answer» D. None of these | |
| 182. |
The length of second's pendulum on surface of the moon, where g is 1 / 6 th of the value of g on the surface of the earth, is |
| A. | 1/ 36 m |
| B. | 1 / 6 m |
| C. | 6 m |
| D. | 36 m |
| Answer» C. 6 m | |
| 183. |
SI unit of luminous intensity |
| A. | Lumen |
| B. | Lux |
| C. | Candela |
| D. | Watt |
| Answer» D. Watt | |
| 184. |
Two capillary tubes of different diameters are dipped in water. The rise of water is |
| A. | Greater in the tube of smaller diameter |
| B. | Greater in the tube of larger diameter |
| C. | Same in both rubes |
| D. | None of above |
| Answer» B. Greater in the tube of larger diameter | |
| 185. |
The velocity of rain drop attains constant value because of |
| A. | Surface tension |
| B. | Upthrust of air |
| C. | Viscous force exerted by air |
| D. | Air currents |
| Answer» D. Air currents | |
| 186. |
Who among the following gave the |
| A. | Newton |
| B. | Cavendish |
| C. | Galileo |
| D. | None of these |
| Answer» C. Galileo | |
| 187. |
Which of the following is most |
| A. | Rubber |
| B. | Wet clay |
| C. | Steel |
| D. | Plastic |
| Answer» D. Plastic | |
| 188. |
The pressure of the earth's atmosphere at sea level is due to the |
| A. | Fact that most living things constantly breathe air |
| B. | Gravitational attraction of the earth for the atmosphere |
| C. | Evaporation of water from the seas and oceans |
| D. | Heating of the atmosphere by the sun |
| Answer» C. Evaporation of water from the seas and oceans | |
| 189. |
In order to double the period of a |
| A. | Its length should be doubled |
| B. | Its length should be quadrupled |
| C. | The mass of its bob should be doubled |
| D. | The mass of its bob should be quadrupled |
| Answer» C. The mass of its bob should be doubled | |
| 190. |
The relay satellite transmits the television programme continuously from one part of the world to another because its |
| A. | Period is greater than the period of rotation of the earth about its axis |
| B. | Period is less than the period of rotation of the earth about its axis |
| C. | Period is less than the period of rotation of the earth about its axis |
| D. | Mass is less than the mass of the earth |
| Answer» D. Mass is less than the mass of the earth | |
| 191. |
The angle of contact of a liquid with a solid does not depend on |
| A. | The angle of inclination of t he solid to the solid-liquid surface |
| B. | The nature of the liquid and the solid |
| C. | The medium which exists above the free surface of the liquid |
| D. | None of the above |
| Answer» B. The nature of the liquid and the solid | |
| 192. |
A simple pendulum is vibrating in an evacuated chamber. It will |
| A. | Come to rest eventually |
| B. | Oscillate for ever with the same amplitude and Frequency |
| C. | Oscillate with the same amplitude will Decreases with time |
| D. | Oscillate with the same amplitude but frequency will Decrease with time |
| Answer» C. Oscillate with the same amplitude will Decreases with time | |
| 193. |
A body slides down a frictionless inclined plane when released from rest. Another body falls freely from the same height, then |
| A. | Both reach the ground together |
| B. | Body sliding down the plane will strike the ground first |
| C. | Both reach the ground with same acceleration |
| D. | Both reach the ground with the same speed |
| Answer» E. | |
| 194. |
Consider the following statements The acceleration due to earth's gravity decreases if |
| A. | 1 and 2 |
| B. | 3 and 4 |
| C. | 1, 2 and 4 |
| D. | 2, 3 and 4 |
| Answer» D. 2, 3 and 4 | |
| 195. |
A particle is executing |
| A. | Straight line |
| B. | Circle |
| C. | Hyperbola |
| D. | Ellipse |
| Answer» B. Circle | |
| 196. |
Consider vehicle moving in sharp circular path at high speed will |
| A. | 1 and 3 |
| B. | 2 and 4 |
| C. | 2 and 3 |
| D. | 1 and 4 |
| Answer» B. 2 and 4 | |
| 197. |
If a gymnast, standing on a rotating stool with his arms ant stretched, suddenly lowers his arms |
| A. | His angular velocity decreases |
| B. | His angular velocity remains constant |
| C. | His moment of inertia decreases |
| D. | His moment of inertia increases |
| Answer» C. His moment of inertia decreases | |
| 198. |
The pressure in a liquid at a given depth below the surface |
| A. | Is always exerted downward |
| B. | Is the same in all directions |
| C. | Equals the total weight of liquid above the depth |
| D. | Depends upon the amount of liquid below the depth |
| Answer» C. Equals the total weight of liquid above the depth | |
| 199. |
Roadways are banked on curves so that |
| A. | The speeding vehicles may not fall inwards |
| B. | The frictional force between the road and vehicle may be decreased |
| C. | The wear and tear of tyre may be avoided |
| D. | The weight of the vehicle may be decreased |
| Answer» D. The weight of the vehicle may be decreased | |
| 200. |
A person is sitting in a moving train and is facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is moving |
| A. | Forward and losing speed |
| B. | Forward and gaining speed |
| C. | Forward with uniform speed |
| D. | Backward with uniform speed |
| Answer» C. Forward with uniform speed | |