1. Waves are carriers of
Answer: B. energy and information
Physics Class 10 Unit 12: Waves MCQs
50 multiple choice questions with the correct answer for each. Tap an option to check yourself, or switch on "Show all answers".
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2. Waves transfer
Answer: D. energy without transferring matter
3. A wave in a rope is an example of a
Answer: A. transverse wave
4. The shortest distance between points where the wave pattern repeats itself is the
Answer: C. wavelength
5. The maximum value of upward displacement within a cycle is called a
Answer: B. crest
6. The lowest point in a cycle of a transverse wave is called a
Answer: C. trough
7. The maximum displacement from the mean position on either side is called
Answer: A. amplitude
8. The number of cycles completed by an oscillating body in one second is called
Answer: D. frequency
9. The SI unit of frequency is
Answer: A. hertz
10. The time required for one wave cycle to pass a point is called
Answer: D. time period
11. Time period and frequency are
Answer: B. reciprocals of each other
12. The relation between time period T and frequency f is
Answer: C. T = 1/f
13. A body performing simple harmonic motion completes one vibration in 2 seconds. Its frequency is
Answer: D. 0.5 Hz
14. 360 waves pass through a point in a river in one hour. The time period of the wave is
Answer: A. 10 s
15. The time period of the vibrator of a ripple tank is 0.5 s. The frequency of the water waves is
Answer: C. 2 Hz
16. The universal wave equation is
Answer: B. v = fλ
17. The wave equation for electromagnetic waves is
Answer: C. c = fλ
18. A rope wave has speed 2.5 m/s and wavelength 0.5 m. Its frequency is
Answer: A. 5 Hz
19. A wave in a ripple tank has frequency 12 Hz and wavelength 3 cm. Its speed is
Answer: B. 0.36 m/s
20. The frequency of red light of wavelength 700 nm in vacuum is about
Answer: D. 4.29×1014 Hz
21. The wavelength of radio waves from an FM station at 90 MHz is about
Answer: C. 3.33 m
22. Which of the following characteristics of a wave is independent of the others?
Answer: A. amplitude
23. Waves that require a material medium for propagation are called
Answer: B. mechanical waves
24. Waves that do not require a material medium are called
Answer: D. electromagnetic waves
25. Which of the following is a mechanical wave?
Answer: B. Sound wave
26. In an electromagnetic wave, the electric and magnetic fields oscillate
Answer: A. perpendicular to each other and to the direction of propagation
27. In a transverse wave, the vibrations are
Answer: C. at right angles to the direction of wave motion
28. Which of the following is a transverse wave?
Answer: D. Light
29. Waves on the surface of water are an example of
Answer: A. transverse waves
30. Seismic S-waves are
Answer: C. transverse waves
31. In a longitudinal wave, the vibrations are
Answer: B. parallel to the direction of wave travel
32. Parts of a longitudinal wave having higher density and pressure are called
Answer: D. compressions
33. Parts of a longitudinal wave having smaller density and pressure are called
Answer: C. rarefactions
34. Which of the following is a longitudinal wave?
Answer: D. Sound
35. The fastest type of seismic wave is the
Answer: A. P-wave
36. Longitudinal waves move fastest through
Answer: B. solids
37. A ripple tank is used to study
Answer: A. properties of water waves
38. The change in direction of a wavefront at a barrier so that it returns to the original medium is
Answer: C. reflection
39. The change in speed (and sometimes direction) of a wave when it enters another medium is
Answer: D. refraction
40. When a water wave enters a medium in which it moves more slowly, its wavelength
Answer: B. decreases
41. When water waves pass from deep to shallow water, their speed
Answer: D. decreases
42. When water waves pass from deep to shallow water, their frequency
Answer: C. remains the same
43. The bending of waves around the corners of an obstacle is called
Answer: A. diffraction
44. Diffraction is greatest when the size of the opening is
Answer: B. less than or equal to the wavelength
45. Wavelength or speed of a wave is ______ by diffraction.
Answer: C. not affected
46. Waves with longer wavelengths diffract
Answer: D. more
47. Listening to radio transmission in the deep valleys of mountain areas is due to
Answer: B. diffraction of waves
48. Tsunamis are most often generated by
Answer: A. earthquakes
49. In the deep sea, tsunami waves
Answer: B. travel fast but are not very high
50. When a tsunami approaches the coast, its speed
Answer: C. decreases while its height increases
About Physics Class 10 Unit 12 MCQs (Federal Board)
These 50 Physics MCQs cover Class 10 Unit 12: Waves of the Federal Board (FBISE) SSC-II (Class 10) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. You can also read the Waves notes for this chapter. Download the Waves MCQs as a PDF using the button at the top of this page.