Chapter-10 General Wave Properties — Online MCQ Test
PHYSICS · Grade 10 · IGCSE cambridge
Practice Chapter-10 General Wave Properties with a free chapter-wise online MCQ test.
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.
Chapter-10 General Wave Properties — Important Questions & Answers
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).
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.
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.
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.
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.
When two waves of equal amplitude are 180° out of phase, destructive interference occurs, causing them to cancel each other completely.