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9th Grade > Physics

DYNAMICS PHYSICS MCQs

Total Questions : 87 | Page 1 of 9 pages
Question 1. If the string is stretched by two opposite forces of 10 N then tension in the string is
  1.    5N
  2.    20 N
  3.    10 N
  4.    zero
 Discuss Question
Answer: Option D. -> zero
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. To every action, there is always an equal but opposite reaction, this statement is known as
  1.    newton's 2nd law of motion
  2.    newton's 1st law of motion
  3.    newton's 3rd law of motion
  4.    law of momentum
 Discuss Question
Answer: Option C. -> newton's 3rd law of motion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. The banking of road prevents
  1.    sliding of vehicle
  2.    rolling of vehicle
  3.    skidding of vehicle
  4.    over speeding of vehicle
 Discuss Question
Answer: Option C. -> skidding of vehicle
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. If we place some coins over the paper strip and pull it with a jerk, then coins don't fall off because of
  1.    friction
  2.    inertia
  3.    resistance
  4.    force
 Discuss Question
Answer: Option B. -> inertia
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. A cyclist of mass 30 kg exerts a force of 250 N to move his cycle. The acceleration is 4 ms−2. The force of friction between the road and tires will be
  1.    120 N
  2.    130 N
  3.    150N
  4.    115 N
 Discuss Question
Answer: Option B. -> 130 N
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. The push and pull that moves or tend to move, stops or tends to stop the motion of a body is known as
  1.    force
  2.    friction
  3.    velocity
  4.    momentum
 Discuss Question
Answer: Option A. -> force
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. As weight is a force so it is a
  1.    scalar quantity
  2.    fixed quantity
  3.    variable quantity
  4.    vector quantity
 Discuss Question
Answer: Option D. -> vector quantity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. The force that produces an acceleration of 1 ms−2 in a body of the mass of 1 kg is called
  1.    slow newton
  2.    zero newton
  3.    one newton
  4.    two newton
 Discuss Question
Answer: Option C. -> one newton
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. At high speeds the friction is
  1.    increased
  2.    decreased
  3.    s zero
  4.    infinite
 Discuss Question
Answer: Option B. -> decreased
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. The ratio of the force of limiting friction to normal reaction is
  1.    zero
  2.    constant
  3.    greater than 1
  4.    less than 2
 Discuss Question
Answer: Option B. -> constant
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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