Periodic Motion Quiz - CBSE Class 10 Science
Free practice quiz: Periodic Motion (CBSE Class 10 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
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What is the period of a pendulum?
- The time it takes to complete one oscillation
- The time it takes to complete two oscillations
- The distance it covers in one oscillation
- The force exerted during one oscillation
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Answer: A. The time it takes to complete one oscillation
The period of a pendulum is defined as the time taken to complete one full oscillation or cycle.
What factors affect the period of a simple pendulum?
- Mass and length
- Length and gravitational acceleration
- Mass and gravitational acceleration
- Length and initial angle
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Answer: B. Length and gravitational acceleration
The period of a simple pendulum depends on its length and the acceleration due to gravity; mass does not play a role.
What happens to the amplitude of a damped oscillation over time?
- It increases
- It stays constant
- It decreases
- It fluctuates randomly
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Answer: C. It decreases
In damped oscillations, energy is gradually lost due to forces like friction, so the amplitude decreases over time.
What does Hooke's Law state concerning springs?
- Force is proportional to distance squared
- Force is proportional to velocity
- Force is proportional to displacement
- Force is inversely proportional to displacement
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Answer: C. Force is proportional to displacement
Hooke's Law states that the force exerted by a spring is directly proportional to its displacement from its equilibrium position (F = -kx).
In SHM, what is the phase difference between velocity and displacement?
- 0 degrees
- 90 degrees
- 180 degrees
- 270 degrees
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Answer: B. 90 degrees
In SHM, velocity leads displacement by 90 degrees, as displacement is at maximum when velocity is zero and vice versa.