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Class 9 Physics MCQS
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Physics – 9th Class
High-Scoring MCQs Bank (295 Questions)
1. Which one is a non-physical quantity?
2. Quantities which can be measured directly and indirectly are called:
3. Which of the following quantities is a base quantity?
4. One femtometre is equal to:
5. The SI unit of intensity of light is:
6. The number of base units in SI are:
7. The SI unit of plane angle is:
8. The quantity 0.00004 m can be written in scientific notation as:
9. In SI, the unit of mass is:
10. Prefix pico is equal to:
11. Pascal is the SI unit of:
12. The unit of volume is:
13. 3.3 GHz is equal to:
14. One megameter is equal to:
15. Diameter of a hydrogen atom is approximately:
16. The least count of Vernier Callipers is:
17. Significant figures in 1.25 × 10^2 m are:
18. Distance is a ________ quantity.
19. Which of the following is a vector quantity?
20. The product of velocity and time is equal to:
21. Shortest distance between two points is called:
22. Falcon can fly at a speed of:
23. The time rate of change of velocity is called:
24. The value of gravitational acceleration (g) is approximately:
25. Newton’s first law of motion is also known as:
26. Formula for Newton’s second Law of motion is:
27. Product of mass and velocity is:
28. The rate of change in momentum of a body is equal to:
29. The turning effect of a force is called:
30. 1 MJ (Mega Joule) is equal to:
31. Which of the following is most suitable to measure the thickness of a paper?
32. A measuring cylinder is used to measure:
33. Which of the following readings is correct using Vernier Callipers?
34. A student measures the thickness of a sheet as:
35. Vernier Callipers was invented by:
36. Very small lengths are measured with:
37. The least count of a measuring tape is:
38. Least count of micrometer screw gauge is:
39. Least count of meter rod is:
40. The least count of Vernier Callipers is:
41. The least count of digital Vernier Callipers is:
42. Pierre Vernier was a ________ scientist.
43. Significant figures in 1.25 × 10^2 m are:
44. Significant figures in 0.000125 km are:
45. An electronic timer can measure time interval as short as:
46. Rounding 3.4567 to 3 significant figures gives:
47. A scalar is a physical quantity described completely by its:
48. One method of addition of vectors is:
49. Which of the following is a vector quantity?
50. Distance is a ________ quantity.
51. Which is a scalar quantity?
52. A single vector having the same effect as all original vectors combined is called:
53. If a body does not change its position with respect to an observer, it is in:
54. A motorcyclist standing on the road is an example of:
55. If a body does not change position with respect to surroundings, it is at:
56. The numerical ratio of displacement to distance is:
57. A ball is dropped from a tower; distance covered in 1st second is:
58. Change in position is called:
59. Distance is a ________ quantity.
60. The product of velocity and time is equal to:
61. Length of the actual path of motion is called:
62. Shortest distance between two points is called:
63. Which of the following is correct?
64. Falcon can fly at a speed of:
65. The fastest land mammal (Cheetah) has a speed of:
66. A ball is thrown vertically upward. Its velocity at the highest point is:
67. A train moving at 36 km h^-1, its speed in m s^-1 is:
68. If a cyclist has an acceleration of 2 m/s^2 for 5 seconds, the change in velocity is:
69. A sprinter completes 100m race in 12s, average speed is:
70. In SI, unit of speed is:
71. Which fish is fastest?
72. The time rate of change of velocity is called:
73. First equation of motion is:
74. Acceleration of a body is negative if velocity:
75. If velocity of a body is uniform, then acceleration is:
76. If velocity changes at a constant rate, acceleration is:
77. An acceleration of 1.5 m s^-2 expressed in km h^-2 is:
78. Area under speed-time graph represents:
79. Slope of speed-time graph shows:
80. 3rd equation of motion is:
81. The correct equation of motion is:
82. Value of gravitational acceleration (g) is approx:
83. Speed of light is:
84. Acceleration of freely falling object is:
85. Einstein proposed Special Theory of Relativity in:
86. Which of the following is a non-contact force?
87. Which of the following is a contact force?
88. How many major types of forces are there?
89. Which is a contact force?
90. SI unit of Gravitational constant G is:
91. Value of Gravitational constant G is:
92. According to Law of Gravitation, Force F is:
93. Concept of gravity was first put up by:
94. Getting hurt when kicking a stone is due to:
95. An object continues motion with constant velocity until:
96. Conservation of linear momentum is equivalent to:
97. Newton’s first law is also known as:
98. Correct form of Newton’s second law is:
99. 1 Newton is equal to:
100. Force on 10 kg body with 2 m s^-2 acceleration is:
101. Force acting for 2s producing 50 kg m/s momentum change is:
102. Law of inertia is:
103. Famous book of Isaac Newton is:
104. Isaac Newton was born in:
105. Formula for Newton’s 2nd Law:
106. Product of mass and acceleration is:
107. 20 N force produces 2.5 m s^-2 acc. Mass is:
108. Weight ‘w’ is equal to:
109. One Newton is:
110. SI unit of Force is:
111. Rocket works on:
112. Mass 20 kg pulled upward, weight is approx:
113. SI unit of mass is:
114. Mass 40 kg, Weight on earth is:
115. SI unit of weight is:
116. Gravitational field strength is:
117. Weight is 147 N, Mass is (g = 10 m s^-2):
118. Lubricant between surfaces:
119. Highly desirable when climbing a hill:
120. How many categories of sliding friction?
121. Material lowering friction:
122. Momentum depends on:
123. Change in momentum is called:
124. SI unit of momentum is:
125. Change in momentum is equal to:
126. Net force on a book (5kg) lying on a table is:
127. Equation of momentum is:
128. Rate of change of momentum is equal to:
129. SI unit of Impulse is:
130. Rate of change of momentum of free falling body equals:
131. Particle mass m, velocity v collides with same mass at rest. Vel of 1st after collision:
132. Law of conservation of momentum applies to:
133. Momentum of isolated system after collision:
134. Principle of conservation of momentum applicable on:
135. Forces acting parallel to each other are:
136. Particle acted by 3N and 4N (perp). Net force is:
137. Forces can be added by:
138. Moment of force is called:
139. Steering wheel of vehicle is example of:
140. Torque formula:
141. Turning effect of force is:
142. SI unit of torque is:
143. Steering wheel produces:
144. Force F at angle 60° with x-axis. Y-component is:
145. Value of sin 90° is:
146. tan 45° is equal to:
147. Fy/Fx is equal to:
148. Value of sin 60° is:
149. Trigonometry is a branch of:
150. Resultant of two forces F1, F2 at 90° is:
151. If force F makes an angle θ with y-axis, then its y-component will be:
152. Direction of force can be determined by:
153. A body is said to be in equilibrium if it has no:
154. A body in equilibrium must not have:
155. How many types of equilibrium are there?
156. A paratrooper coming down with terminal velocity is in:
157. An electric bulb hanging from the ceiling is an example of:
158. The vector sum of all torques acting on a body about any point must be:
159. The conditions of equilibrium are:
160. The mathematical form of the second condition of equilibrium is:
161. According to the first condition of equilibrium:
162. In stable equilibrium, the centre of gravity of the body lies:
163. A cylinder resting on its circular base is in:
164. Centripetal force is given by:
165. The gravitational pull of the earth provides:
166. Which force rotates the body in a circle?
167. The centripetal acceleration is inversely proportional to:
168. Centripetal force performs:
169. Work done is maximum when the angle between force F and displacement d is:
170. The product of force and displacement is:
171. The SI unit of work is:
172. A 65 N force is pulling the suitcase for a distance of 20 meters, find work:
173. The ability of a body to do work is called:
174. 1 MJ (Mega Joule) is equal to:
175. One kilo Joule is equal to:
176. One mega Joule is equal to:
177. No work is done when θ is:
178. A bullet of mass 0.05 kg has a speed of 300 m s^-1. Its kinetic energy is:
179. If a car doubles its speed, its kinetic energy will be:
180. If the momentum of an object is doubled, its kinetic energy will:
181. The combination of kinetic energy and potential energy is:
182. Work done in a single beat of the human heart is approximately:
183. A ball weighing 50 N is lifted to a height of 5 m. Potential energy stored is:
184. Work is a quantity:
185. Capability to do work is called:
186. If the velocity of a body becomes three times greater, then Kinetic Energy becomes:
187. The formula of kinetic energy is:
188. A body of mass 2 kg is 1 m high. Its potential energy is (g = 10 m s^-2):
189. Potential energy (P.E.) = ?
190. The energy in a stretched bow is:
191. The work done by a single beat of human heart is approx:
192. The energy output of a power station in one year is:
193. Work done in lifting a box to the second floor converts to:
194. Which of the following is not a renewable energy source?
195. Which one is a renewable source of energy?
196. Which one is a cheaper source of energy?
197. How much time is required to form new non-renewable energy sources?
198. The SI unit of power is:
199. The rate of doing work is called:
200. What is the power utilized when 100 J of work is done in 5 s?
201. The SI unit of power is:
202. Power of an electric fan in watts is approx:
203. What is the power of an air conditioner approx?
204. One watt is equal to:
205. Consumption of energy by a 60-watt bulb in 2 seconds is:
206. James Watt was a ________ engineer.
207. The average efficiency of a diesel engine is:
208. Efficiency of an ideal system is:
209. If the diameter of a wire is reduced to half, extension under same load becomes:
210. Materials are elastic up to a certain limit known as:
211. The most elastic material among the following is:
212. Plasticine is a _______ material.
213. When a spring is compressed, what form of energy does it possess?
214. Which graph measures spring constant k?
215. Device used to measure weight using spring extension is:
216. Which device is used for current detecting?
217. Galvanometer makes use of a tiny spring called:
218. SI unit of spring constant is:
219. “k” (spring constant) is equal to:
220. Formula of Hooke’s law is:
221. Galvanometer is a ________ detecting device.
222. A tiny spring used in a galvanometer is called:
223. Which of the following substances has low density?
224. Density of air is approx:
225. Density of water is:
226. The density of aluminum is:
227. Density of steel is:
228. Density of gold is:
229. Ratio of pressure on two plates of area 2 and 3 m^2 at same depth is:
230. The SI unit of pressure is:
231. Force exerted perpendicularly on unit area is called:
232. One Pascal is equal to:
233. If area of contact between feet and ground is reduced, pressure:
234. Pressure of liquids in a container increases with:
235. Liquid pressure “P” at depth “h” is calculated by:
236. The upthrust of liquid is given by:
237. Force exerted by atmosphere on a rectangular surface 50cm x 40cm (Atmo Pressure = 100kPa):
238. Atmospheric pressure extends up to a height of about:
239. Atmospheric pressure can be measured by:
240. Atmospheric pressure depends upon the density of:
241. The principle of a hydraulic press is based on:
242. What is the pressure at the Sun’s center?
243. Pressure at Earth’s center is:
244. Normal Blood pressure is (approx range):
245. Pressure on Mars is:
246. Temperature of a substance is:
247. Heat is the:
248. Internal energy of air in a hot-air balloon increases as temperature:
249. Unit of heat is:
250. Intensity of an object’s heat or cold is:
251. In Kelvin scale, temperature corresponding to melting point of ice is:
252. Temperature which has same value on Celsius and Fahrenheit scale is:
253. One disadvantage of alcohol in thermometer is:
254. Thermometer boiling point is:
255. Thermometer bulb at one end is filled with:
256. In Celsius scale, interval between fixed points is divided into 100 parts, each called:
257. In Fahrenheit scale, lower fixed point is labeled as:
258. Which temperature scale is used in scientific measurement?
259. Normal temperature of human body is:
260. Which one is not a magnetic material?
261. Which is a magnetic material?
262. Which of the following is a non-magnetic material?
263. How many poles does a magnet have?
264. Magnetism at the centre of a bar magnet is:
265. Which material can exhibit induced magnetism?
266. Main cause of induced magnetism is:
267. Which material can be made a magnet?
268. Which material is commonly used to make permanent magnets?
269. Example of a temporary magnet is:
270. Example of permanent magnetic material is:
271. Magnetic lines of force:
272. Unit of magnetic field strength is:
273. Which can be used to visualize magnetic field lines?
274. Magnetic lines of force are directed outside magnet from:
275. Permanent magnets are used in:
276. Permanent magnets are used in:
277. Reverse process of electric generator is:
278. Core of an electromagnet is made of:
279. Huge electromagnets are used in:
280. Speed of a bullet train is approx:
281. A common method to magnetize a material is:
282. Which can cause demagnetization?
283. Steel bar can be stroked in:
284. Physics is a branch of:
285. Which branch of science plays a vital role in technology?
286. Which is considered the fourth dimension?
287. Branch of physics dealing with particles like neutrons/protons is:
288. Study of large structure and evolution of universe is:
289. Integrated field combining physics, biology, chemistry is:
290. Medical physics is applied in:
291. Ultimate truth of scientific method is:
292. A hypothesis:
293. A graph of organized data is example of:
294. Statement that can be tested/disproven is:
295. Logical conclusions of observations are called:
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Important MCQs of Class 9
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