1. Which of the following is a mechanical wave?
A) Light wave
B) Radio wave
C) Sound wave
D) X-ray
Answer: C) Sound wave
2. The distance between two consecutive crests of a wave is called:
A) Amplitude
B) Wavelength
C) Frequency
D) Velocity
Answer: B) Wavelength
3. Which type of wave requires a medium to travel?
A) Electromagnetic waves
B) Mechanical waves
C) Gamma rays
D) Microwaves
Answer: B) Mechanical waves
4. The time taken for one complete wave to pass a point is called:
A) Frequency
B) Wavelength
C) Period
D) Speed
Answer: C) Period
5. A wave in which the particles of the medium move perpendicular to the direction of wave propagation is called:
A) Longitudinal wave
B) Transverse wave
C) Surface wave
D) Electromagnetic wave
Answer: B) Transverse wave
6. Sound waves in air are:
A) Transverse waves
B) Longitudinal waves
C) Electromagnetic waves
D) None of these
Answer: B) Longitudinal waves
7. The amplitude of a wave is a measure of its:
A) Wavelength
B) Energy
C) Frequency
D) Speed
Answer: B) Energy
8. Which of the following waves can travel through a vacuum?
A) Water waves
B) Sound waves
C) Light waves
D) Seismic waves
Answer: C) Light waves
9. The unit of frequency is:
A) Hertz
B) Newton
C) Meter
D) Joule
Answer: A) Hertz
10. In longitudinal waves, the regions where particles are closest together are called:
A) Troughs
B) Compressions
C) Rarefactions
D) Nodes
Answer: B) Compressions
11. In longitudinal waves, the regions where particles are farthest apart are called:
A) Troughs
B) Compressions
C) Rarefactions
D) Antinodes
Answer: C) Rarefactions
12. The speed of a wave is calculated by:
A) Frequency × Wavelength
B) Amplitude × Frequency
C) Wavelength ÷ Frequency
D) Energy ÷ Wavelength
Answer: A) Frequency × Wavelength
13. A wave that has both transverse and longitudinal components is called:
A) Surface wave
B) Sound wave
C) Seismic P-wave
D) Electromagnetic wave
Answer: A) Surface wave
14. The bending of waves around obstacles is called:
A) Reflection
B) Refraction
C) Diffraction
D) Interference
Answer: C) Diffraction
15. When two waves meet and combine to form a larger wave, it is called:
A) Reflection
B) Interference
C) Refraction
D) Diffraction
Answer: B) Interference
16. The point of maximum displacement in a wave is called:
A) Node
B) Antinode
C) Compression
D) Rarefaction
Answer: B) Antinode
17. A wave that carries energy without transferring matter is:
A) Mechanical wave
B) Sound wave
C) Electromagnetic wave
D) Water wave
Answer: C) Electromagnetic wave
18. The wave produced in a stretched string when plucked is a:
A) Longitudinal wave
B) Surface wave
C) Transverse wave
D) Shock wave
Answer: C) Transverse wave
19. The number of waves passing a point in one second is called:
A) Wavelength
B) Amplitude
C) Frequency
D) Speed
Answer: C) Frequency
20. A node in a standing wave is a point where:
A) Maximum displacement occurs
B) Minimum displacement occurs
C) Frequency is highest
D) Wave speed is zero
Answer: B) Minimum displacement occurs
21. A wave changes speed and direction when it passes from one medium to another. This phenomenon is called:
A) Diffraction
B) Reflection
C) Refraction
D) Polarization
Answer: C) Refraction
22. When a wave bounces back from a surface, it is called:
A) Refraction
B) Reflection
C) Diffraction
D) Absorption
Answer: B) Reflection
23. The superposition of two waves moving in opposite directions produces:
A) Traveling wave
B) Standing wave
C) Shock wave
D) Transverse wave
Answer: B) Standing wave
24. Which of the following has the highest speed in air?
A) Light wave
B) Sound wave
C) Water wave
D) Seismic wave
Answer: A) Light wave
25. The part of the wave that is below the equilibrium position in a transverse wave is called:
A) Crest
B) Trough
C) Compression
D) Rarefaction
Answer: B) Trough
26. Waves with frequencies above 20,000 Hz are called:
A) Audible waves
B) Ultrasound waves
C) Infrasound waves
D) Radio waves
Answer: B) Ultrasound waves
27. The interference pattern with regions of zero amplitude is called:
A) Node
B) Antinode
C) Crest
D) Rarefaction
Answer: A) Node
28. The energy carried by a wave is directly proportional to:
A) Frequency
B) Wavelength
C) Amplitude squared
D) Period
Answer: C) Amplitude squared
29. The angle of incidence is equal to the angle of reflection according to:
A) Snell’s law
B) Law of refraction
C) Law of reflection
D) Doppler effect
Answer: C) Law of reflection
30. Sound waves travel fastest in:
A) Air
B) Water
C) Steel
D) Vacuum
Answer: C) Steel