ICSE Class 10 Sound — Mock Test (2027)

Free online mock test for Sound (ICSE Class 10 Physics) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.Why are soldiers asked to walk out of step while crossing bridges?
   • A.To reduce the total weight on the bridge at any given time.
   • B.To prevent resonance if their marching frequency matches the bridge's natural frequency.
   • C.To maintain better balance and avoid slipping on the bridge.
   • D.To increase the speed at which they cross the bridge.
2. 2.Resonance occurs when a body vibrates with increased amplitude due to an external force. Which condition must be met for resonance to take place?
   • A.The applied force must be stronger than the body's restoring force.
   • B.The frequency of the applied force must match the body's natural frequency.
   • C.The body must be in a vacuum to avoid damping.
   • D.The amplitude of the applied force must exceed 10 cm.
3. 3.Select a correct option with respect to echo depth sounding.
   • A.Infrasonic waves are used.
   • B.The frequency of the waves used is between $20\mathrm{Hz}$ and $20000\mathrm{Hz}$.
   • C.Ultrasonic waves are used.
   • D.Supersonic waves are used.
4. 4.An observer stands at a certain distance away from a cliff and produces a loud sound. He hears the echo of the sound after $1.8\,\mathrm{s}$. Calculate the distance between the cliff and the observer if the velocity of sound in air is $340\,\mathrm{ms}^{-1}$.
5. 5.Why is a loud sound heard during acoustic resonance?
   • A.The frequency of the sound waves increases
   • B.The amplitude of vibration becomes large, increasing loudness
   • C.The speed of sound in the medium doubles
   • D.The wavelength of the sound waves shortens