Physics Practice MCQ Page 7

Multiple Choice questions for Physics in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.
Question: 261   A force of 100 dynes acts for 10 seconds on a body of mass500g. What is the change in momentum?
  1. 100 C.G.S. units
  2. 10 C.G.S. units
  3. 1000 C.G.S. units
  4. 5000 C.G.S. units
Question: 262   A rope attached to a post in the ground is pulled horizontally with a force of 80 kg. The pole pulls back with a force of
  1. 1000 kg
  2. 80 kg
  3. 40 kg
  4. 160 kg
Question: 263   If a car is to gain momentum, it must
  1. lose inertia
  2. accelerate
  3. move rapidly
  4. lose weight
Question: 264   Which of the following is not accelerated?
  1. The moon in its orbit
  2. a stone in free fall
  3. a car in which the engine thrust is equal to the friction
  4. a tennis ball rebounding from the ground
Question: 265   The algebraic sign of acceleration depends on
  1. the choice of direction
  2. the sign of the final velocity
  3. whether an object is speeding up or sowing down
  4. the position of the object
Question: 266   A car accelerates for 10s at 6 m/s2. What is its final seed if its initial was 4 m/s?
  1. 34 m/s
  2. 64 m/s
  3. 60 m/s
  4. 30 m/s
Question: 267   Which of the following vector quantities? I. Density II. Acceleration III. Energy IV. Force
  1. I only
  2. I and III
  3. II and IV
  4. I, II, III
Question: 268   We know that forces are vectors because
  1. they obey the same mathematical rules that displacement obey
  2. they are defined in such a way that they are vectors
  3. they always add to zero
  4. they have magnitude
Question: 269   An 800 kgs. fireman slides down a pole in a fire station. His grip on the pole causes a frictional force of 240 newtons opposing his fall. What is the approximate value of his acceleration towards the floor below?
  1. 13 m/sec2
  2. 10 m/sec2
  3. 18 m/sec2
  4. 7 m/sec2
Question: 270   The minimum number of unequal forces whose vector sum can equal to zero is
  1. 2
  2. 1
  3. 3
  4. 4
Question: 271   A car is traveling due east at 40 miles /hr turns south and maintains the same speed. What is the change in velocity of car?
  1. 40 miles /hr east-south
  2. 400 miles /hr east-south
  3. 80 miles /hr east-south
  4. none
Question: 272   A force of6.0 N acts on a body of mass 1 kg. for some time during which the body attains a velocity of 30 m/s/ The time (in second) for which the force acts on the body is
  1. 26
  2. 6
  3. 5
  4. 2

Answers to the questions of Physics on this page

Following list gives the correct choice for the answer of the Physics mcqs.
261 . D       262 . B       263 . B       264 . C       265 . A       266 . B       267 . C       268 . A       269 . D       270 . C       271 . D       272 . C      

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