🎓 10th std Quiz Portal
TRUE FALSE

Acoustics

Questions 1–10 of 17
Q1. Hard surfaces generally reflect sound better than soft surfaces.
Q2. SONAR uses light waves.
Q3. The normal human audible range is about 20 Hz to 20 kHz.
Q4. Sound generally travels as a longitudinal wave in air.
Q5. Sound can travel through solids, liquids and gases.
Q6. Loudness depends mainly on frequency.
Q7. Increasing the amplitude of sound directly increases its pitch.
Q8. Sound can travel through vacuum without a medium.
Q9. Ultrasound has a frequency below 20 Hz.
Q10. Pitch is related to frequency.