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CBSE Class 11 (Science) Kinetic Theory & Oscillations — practice questions — page 6

Explore 180 free Kinetic Theory & Oscillations questions in CBSE Class 11 (Science) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Kinetic Theory & Oscillations questions and exercises with answers

Showing questions 151–180 of 180.

Which pendulum length is most common in grandfather clocks?Read the answer and worked solution →Which pendulum length is used in the Big Ben tower clock?Read the answer and worked solution →Why did early pendulum clocks run slower in summer?Read the answer and worked solution →Which temperature compensated pendulum was invented in 1726?Read the answer and worked solution →Invar, used for precision pendulum rods, is which kind of material?Read the answer and worked solution →Why must a pendulum clock hang from a rigid support?Read the answer and worked solution →Why did Huygens mount cycloidal guides next to the pivot?Read the answer and worked solution →For wide swings, how does the period of a real pendulum change?Read the answer and worked solution →Which captain invented the reversible pendulum in 1818?Read the answer and worked solution →Precision pendulums were kept in low pressure tanks to keep what constant?Read the answer and worked solution →The word pendulum comes from a Latin word meaning what?Read the answer and worked solution →The Shortt-Synchronome clock achieved what accuracy?Read the answer and worked solution →The Huygens pendulum clock improved daily accuracy from about 15 minutes to what?Read the answer and worked solution →Robert Hooke studied which pendulum whose bob moves in a circle or ellipse?Read the answer and worked solution →Which instrument uses pendulums to detect ground shaking?Read the answer and worked solution →In physics, what is damping?Read the answer and worked solution →Which Greek letter denotes the damping ratio?Read the answer and worked solution →What is the damping ratio of a critically damped system?Read the answer and worked solution →Which damping ratio range describes an underdamped system?Read the answer and worked solution →A mass in thick fluid returns slowly without overshooting. This case is what?Read the answer and worked solution →Which case has the mass overshoot repeatedly with shrinking oscillations?Read the answer and worked solution →What is special about critical damping compared with overdamping?Read the answer and worked solution →A lossless spring-mass system, once started, would oscillate for how long?Read the answer and worked solution →The damping ratio has which property?Read the answer and worked solution →A body in SHM has amplitude 0.05 m and angular frequency 10 rad/s. Its maximum speed is?Read the answer and worked solution →A 2 kg mass on a spring of constant 200 N/m has what angular frequency?Read the answer and worked solution →A spring of constant 200 N/m oscillates with amplitude 0.1 m. What is its total energy?Read the answer and worked solution →An SHM has angular frequency pi rad/s. What is its period?Read the answer and worked solution →For a simple pendulum, what does the length l measure in T = 2 pi root(l/g)?Read the answer and worked solution →A force F = -kx on a spring obeys which law?Read the answer and worked solution →

Worked practice questions

Which pendulum length is most common in grandfather clocks?

  1. About 25 cm
  2. About 1 metre
  3. About 4 metres
  4. About 10 cm
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Correct answer: B. About 1 metre

The seconds pendulum is about one metre long and swings with a two second period.

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Which pendulum length is used in the Big Ben tower clock?

  1. 25 cm
  2. 1 m
  3. 4 m
  4. 2.25 m
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Correct answer: C. 4 m

Big Ben uses a long two-second pendulum of 4 m.

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Why did early pendulum clocks run slower in summer?

  1. Gravity weakened
  2. Air became thin
  3. The bob lost mass
  4. The rod grew longer
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Correct answer: D. The rod grew longer

Heat lengthens the rod, a longer pendulum has a longer period, so the clock loses time.

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