Chapter Exam

Chapter-10 General Wave Properties — Online MCQ Test

Q: What is the SI unit of frequency?

Answer: A. Hertz (Hz) — Frequency is the number of oscillations per unit time, measured in Hertz (Hz), which is equivalent to oscillations per second (s⁻¹).

Q: Which phenomenon occurs when a wave bounces off a surface and returns?

Answer: C. Reflection — Reflection is the phenomenon where a wave bounces back from a surface, with the angle of incidence equal to the angle of reflection.

Q: A sound wave has a frequency of 256 Hz and travels at 340 m/s in air. What is its wavelength?

Answer: B. 1.33 m — Using λ = v/f, where v = 340 m/s and f = 256 Hz: λ = 340/256 = 1.33 m.

PHYSICS · Grade 10 · IGCSE cambridge

Practice Chapter-10 General Wave Properties with a free chapter-wise online MCQ test for IGCSE cambridge Grade 10 PHYSICS. This chapter covers: Wavelength frequency amplitude and speed of waves and reflection refraction and diffraction.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-10 General Wave Properties — Important Questions & Answers (FAQ)

Frequently asked questions from IGCSE cambridge Grade 10 PHYSICS — Chapter-10 General Wave Properties, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is the SI unit of frequency?

A. Hertz (Hz) ✓
B. Meter per second (m/s)
C. Second (s)
D. Meter (m)

Answer: A. Hertz (Hz)
Frequency is the number of oscillations per unit time, measured in Hertz (Hz), which is equivalent to oscillations per second (s⁻¹).

Which of the following correctly defines wavelength?

A. The distance traveled by a wave in one second
B. The distance between two consecutive points in phase on a wave ✓
C. The maximum displacement of a particle from its equilibrium position
D. The time taken for one complete oscillation

Answer: B. The distance between two consecutive points in phase on a wave
Wavelength (λ) is the distance between two consecutive points that vibrate in phase, such as two consecutive crests or troughs.

Which phenomenon occurs when a wave bounces off a surface and returns?

A. Refraction
B. Diffraction
C. Reflection ✓
D. Absorption

Answer: C. Reflection
Reflection is the phenomenon where a wave bounces back from a surface, with the angle of incidence equal to the angle of reflection.

A sound wave has a frequency of 256 Hz and travels at 340 m/s in air. What is its wavelength?

A. 0.75 m
B. 1.33 m ✓
C. 87,040 m
D. 85 m

Answer: B. 1.33 m
Using λ = v/f, where v = 340 m/s and f = 256 Hz: λ = 340/256 = 1.33 m.

Two identical waves traveling in the same direction are separated by a phase difference of 180°. What is the result of their superposition?

A. Constructive interference with doubled amplitude
B. Destructive interference with complete cancellation ✓
C. A wave with unchanged amplitude but altered frequency
D. Formation of a standing wave pattern

Answer: B. Destructive interference with complete cancellation
When two waves of equal amplitude are 180° out of phase, destructive interference occurs, causing them to cancel each other completely.