This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 16 Oscillations – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 4 (16 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An enormous pendulum-driven clock, located on the earth, is set into motion by releasing its 10 meter long simple pendulum from a maximum angle of less then 10 degrees relative to the vertical. At what what approximate time t will the pendulum have fallen to a perfectly vertical orientation? A) Pi/2 seconds. B) Pi/10 seconds. C) Pi/5 seconds. D) Pi/4 seconds. Show Answer Correct Answer: A) Pi/2 seconds. 2. Which equation defines Hooke's Law? A) F = x. B) F = 1/2 k x$^{2}$. C) F = k x. D) F = 1/2 k x. Show Answer Correct Answer: C) F = k x. 3. A simple harmonic motion is defined as motion where A) $a\propto-x$. B) $v\propto x$. C) $a\propto x$. D) $v\propto-x$. Show Answer Correct Answer: A) $a\propto-x$. 4. Missy's favorite ride at the Topsfield Fair is the Rotor, which has a radius of 4.0 m. The ride takes 2.0 s to make one full revolution. Calculate the period of the Rotor. A) 2.0 s. B) 0.033 s. C) 0.5 s. D) 30 s. Show Answer Correct Answer: A) 2.0 s. 5. A simple pendulum takes 30s to complete 18 oscillations. What is the time period of the pendulum? A) 16.6 ss. B) 166.0 s. C) 0.166 s. D) 1.66 s. Show Answer Correct Answer: D) 1.66 s. 6. A pendulum makes 33 complete back and forth cycles of vibration in 11 seconds. It's frequency is: A) 3.0 Hz. B) 3.0 s. C) 0.33 s. D) 0.33 Hz. Show Answer Correct Answer: A) 3.0 Hz. 7. Free oscillation and forced oscillation differ in that: A) Free oscillation occurs without any external force, while forced oscillation occurs with an external force. B) Free oscillation always leads to resonance, while forced oscillation does not. C) Free oscillation occurs at the natural frequency, while forced oscillation occurs at the driving frequency. D) Free oscillation is always damped, while forced oscillation is not necessarily damped. Show Answer Correct Answer: A) Free oscillation occurs without any external force, while forced oscillation occurs with an external force. 8. Restoring force, of a body executing oscillation, vanishes at A) Mean position. B) Extreme position. C) The midway between mean and extreme position. D) It depends on the type of oscillation . Show Answer Correct Answer: A) Mean position. 9. When the frequency of the external force matches the natural frequency of the system, what phenomenon occurs? A) Resonance. B) Damping. C) Free oscillation. D) Forced oscillation. Show Answer Correct Answer: A) Resonance. 10. Which of the following devices uses the principle of oscillation to measure time? A) Digital watch. B) Pendulum clock. C) Stopwatch. D) Sundial. Show Answer Correct Answer: B) Pendulum clock. 11. Damped oscillation refers to: A) Oscillation where energy is removed from the system. B) Oscillation where the amplitude increases over time due to external forces. C) Oscillation where the amplitude decreases over time due to external forces. D) Oscillation where energy is added to the system. Show Answer Correct Answer: C) Oscillation where the amplitude decreases over time due to external forces. 12. A leaky faucet drips 40 times in 30.0 s. What is the frequency of the dripping? A) 1.3 Hz. B) 0.75 Hz. C) 1.6 Hz. D) 0.63 Hz. Show Answer Correct Answer: A) 1.3 Hz. 13. Time duration of a pulse is given by A) $\Delta\omega\\Delta t\approx1$. B) $\Delta\nu\\Delta t\approx2\pi$. C) $\Delta\nu\\Delta t\approx1$. D) $\Delta\nu\\Delta t\\approx\frac{h}{2\pi}$. Show Answer Correct Answer: C) $\Delta\nu\\Delta t\approx1$. 14. After closing a deal with a client, Kent leans back in his swivel chair and spins around with a frequency of 0.5 Hz. What is Kent's period of spin? A) 120 s. B) 2 s. C) 0.5 s. D) 0.0083 s. Show Answer Correct Answer: B) 2 s. 15. If the frequency of a wave is doubled, the wavelength will be ..... A) Longer. B) Shorter. C) The wavelength will remain the same. D) None of the above. Show Answer Correct Answer: B) Shorter. 16. A simple pendulum oscillates with small amplitude, and its frequency is f. If its length is doubled, what is the new frequency of its motion? A) $\sqrt{2}f$. B) $2f$. C) $\frac{1}{\sqrt{2}}f$. D) $\frac{1}{2}f$. Show Answer Correct Answer: C) $\frac{1}{\sqrt{2}}f$. ← PreviousRelated QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 1Class 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 2Class 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 3Class 11 Physics (Part Ii) Chapter 11 Mechanical Properties Of Solids QuizClass 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter QuizClass 11 Physics (Part Ii) Chapter 14 Thermodynamics QuizClass 11 Physics (Part Ii) Chapter 15 Kinetic Theory QuizClass 11 Physics (Part Ii) Chapter 17 Waves Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books