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Short Questions
Complete set of 39 short questions with exact exam-ready answers. Covers sound waves, reflection, refraction, diffraction, pitch, loudness, infrasound, ultrasound and SONAR.
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Exercise Short Questions
Exercise-specific short questions with precise answers. Includes medium effect on sound, reflection, loudness factors, echo, ultrasound in medicine.
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Long Questions
In-depth long questions with detailed explanations. Speed of sound and factors, solid vs liquid vs gas, amplitude and frequency effect, echo, reflection/refraction/diffraction, infrasound and ultrasound applications.
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Numerical Problems
Step-by-step solutions for frequency, wavelength, echo depth, and time period using wave equation and SONAR formula. Complete derivations with data and answers.
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Constructed Response
Exam-focused constructed response questions with reasoning. Tuning fork and surface area, bell jar experiment, echo distance, pitch and frequency, acoustic protection, canyon echo calculation.
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Multiple Choice Questions
Comprehensive MCQs covering sound production, echo, longitudinal waves, speed in mediums, acoustic protection, audible range, and more with explanations.
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⚡ Key Formulas – Sound
\[ v = f\lambda \]
Wave Equation
Wave Equation
\[ T = \frac{1}{f} \]
Time Period
Time Period
\[ d = \frac{v \times t}{2} \]
SONAR / Echo Distance
SONAR / Echo Distance
\[ f = \frac{n}{t} \]
Frequency (chimes)
Frequency (chimes)
\[ S = vt \]
Distance (lightning)
Distance (lightning)
Unit 10Thermal Physics
Unit 11Transfer of Thermal Energy
Unit 12Waves
Unit 13✨ Sound
Unit 14Light
Unit 15Electrostatics
Unit 16Electricity
Unit 17Electromagnetism
Unit 18Electromagnetic Induction & EM Waves
Unit 19Electronics
Unit 20Atomic and Nuclear Physics
Unit 21Space and Environment
📖 Complete syllabus coverage for Class 10 Physics (PECTAA 2026) – Units 10 to 21
Created by Hira Science Academy | Aligned with PECTAA 2026 Syllabus