Wave Properties — Prelims Questions

Consider the following statements regarding wave phenomena: 1. Diffraction is more pronounced for waves with shorter wavelengths. 2. Sound waves are longitudinal and can be polarized. 3. The speed of light in a medium is always less than its speed in a vacuum. 4. Constructive interference occurs when two waves meet out of phase. Which of the statements given above is/are correct?

Which of the following wave properties is primarily responsible for the phenomenon of 'echo'?

Consider the application of wave properties in modern technologies: 1. LIGO's detection of gravitational waves relies on the principle of wave interference. 2. 5G millimeter wave technology faces challenges due to the high diffraction of short-wavelength waves. 3. Medical ultrasound imaging utilizes the reflection of high-frequency sound waves. Which of the statements given above is/are correct?

Which of the following is a characteristic unique to transverse waves and not observed in longitudinal waves?

A ship uses sonar to detect objects underwater. If the sonar emits a sound pulse and receives an echo 4 seconds later, and the speed of sound in water is 1500 m/s, what is the distance to the object?